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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 | 1 |
| 3 | -1 |
| 4 | -5 |
| 5 | 12 |
| 6 | 81 |
| 7 | -293 |
| 8 | -2361 |
| 9 | 11365 |
| 10 | 104562 |
| 11 | -630172 |
| 12 | -6493832 |
| 13 | 47143346 |
| 14 | 538611615 |
| 15 | -4581889465 |
| 16 | -57623005154 |
| 17 | 562546009728 |
| 18 | 7739224455922 |
| 19 | -85309456282000 |
| 20 | -1276419913050610 |
| 21 | 15682410921426105 |
| 22 | 253801993058469530 |
| 23 | -3439337745753797445 |
| 24 | -59903911856917937325 |
| 25 | 887628418264985947932 |
[1,1,1,-1,-5,12,81,-293,-2361,11365,104562, -630172,-6493832,47143346,538611615,-4581889465, -57623005154,562546009728,7739224455922, -85309456282000,-1276419913050610, 15682410921426105,253801993058469530, -3439337745753797445,-59903911856917937325, 887628418264985947932] |