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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 16 |
| 5 | 78 |
| 6 | 324 |
| 7 | 1141 |
| 8 | 3885 |
| 9 | 12630 |
| 10 | 40315 |
| 11 | 126604 |
| 12 | 393986 |
| 13 | 1216525 |
| 14 | 3737912 |
| 15 | 11438230 |
| 16 | 34898189 |
| 17 | 106217986 |
| 18 | 322683051 |
[0,0,1,16,78,324,1141,3885,12630,40315,126604, 393986,1216525,3737912,11438230,34898189, 106217986,322683051] |