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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 72 |
| 5 | 845 |
| 6 | 12972 |
| 7 | 244741 |
| 8 | 5468176 |
| 9 | 141111693 |
| 10 | 4129615540 |
| 11 | 135127313101 |
| 12 | 4888457921688 |
| 13 | 193733261456605 |
| 14 | 8346805786382364 |
| 15 | 388432439875807125 |
| 16 | 19417284993350451232 |
| 17 | 1037672210204182995277 |
| 18 | 59035412382992193993732 |
[0,1,2,9,72,845,12972,244741,5468176,141111693, 4129615540,135127313101,4888457921688, 193733261456605,8346805786382364, 388432439875807125,19417284993350451232, 1037672210204182995277,59035412382992193993732] |