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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 | 0 |
| 2 | 1422 |
| 3 | 13056 |
| 4 | 84024 |
| 5 | 285696 |
| 6 | 958422 |
| 7 | 2131200 |
| 8 | 5413374 |
| 9 | 9655296 |
| 10 | 20529216 |
| 11 | 32221440 |
| 12 | 61570992 |
| 13 | 87542784 |
| 14 | 154925820 |
| 15 | 206952192 |
| 16 | 345543480 |
| 17 | 439022592 |
| 18 | 698892510 |
| 19 | 853288704 |
| 20 | 1321785360 |
| 21 | 1557921792 |
| 22 | 2326595904 |
| 23 | 2692744704 |
| 24 | 3941172102 |
| 25 | 4428518400 |
| 26 | 6356272428 |
[1,0,1422,13056,84024,285696,958422,2131200, 5413374,9655296,20529216,32221440,61570992, 87542784,154925820,206952192,345543480,439022592, 698892510,853288704,1321785360,1557921792, 2326595904,2692744704,3941172102,4428518400, 6356272428] |