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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 16 |
| 4 | 116 |
| 5 | 676 |
| 6 | 3452 |
| 7 | 16276 |
| 8 | 72956 |
| 9 | 316276 |
| 10 | 1340252 |
| 11 | 5590036 |
| 12 | 23054396 |
| 13 | 94314676 |
| 14 | 383578652 |
| 15 | 1553331796 |
| 16 | 6270493436 |
| 17 | 25253701876 |
| 18 | 101530450652 |
| 19 | 407669649556 |
| 20 | 1635323974076 |
| 21 | 6555235693876 |
| 22 | 26262769508252 |
[1,1,2,16,116,676,3452,16276,72956,316276,1340252, 5590036,23054396,94314676,383578652,1553331796, 6270493436,25253701876,101530450652,407669649556, 1635323974076,6555235693876,26262769508252] |