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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 9 |
| 1 | 0 |
| 2 | 126 |
| 3 | 144 |
| 4 | 1179 |
| 5 | 2556 |
| 6 | 10332 |
| 7 | 29952 |
| 8 | 109053 |
| 9 | 293580 |
| 10 | 1221390 |
| 11 | 3269736 |
| 12 | 12652155 |
| 13 | 36719028 |
| 14 | 126768168 |
| 15 | 392732064 |
| 16 | 1284178329 |
| 17 | 4104726084 |
| 18 | 13312704402 |
| 19 | 42563828232 |
| 20 | 138178786131 |
| 21 | 439049042172 |
| 22 | 1420005679128 |
[9,0,126,144,1179,2556,10332,29952,109053,293580, 1221390,3269736,12652155,36719028,126768168, 392732064,1284178329,4104726084,13312704402, 42563828232,138178786131,439049042172, 1420005679128] |