Av(123, 3412)
The requested set is not in the database, but a symmetry of it is.
Generating Function
Counting Sequence
1, 1, 2, 5, 13, 33, 80, 185, 411, 885, 1862, 3853, 7881, 15993, 32284, ...
Implicit Equation for the Generating Function
Recurrence
Explicit Closed Form
This specification was found using the strategy pack "Point Placements" and has 32 rules.
Found on January 18, 2022.Finding the specification took 5 seconds.
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8
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8
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27
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8
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31
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28
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6, 7
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30
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8
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29
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20
1 |
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28
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6, 7
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27
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6, 7
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26
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0
1 |
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4
1 |
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25
1 |
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24
1 | |
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6, 7
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8
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18
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23
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8
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19
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6, 7
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22
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21
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20
1 |
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19
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6, 7
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18
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5
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17
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16
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8
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11
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14, 15
\ | 1 |
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\ | 1 | ||
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5
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13
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12
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11
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9, 10
1 |
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\ | 1 | ||
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5
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8
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6, 7
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1
5
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4
1 |
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2, 3
1 |
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1 | |
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1
0
1 |
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