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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 | 15 |
| 2 | 160 |
| 3 | 1530 |
| 4 | 14071 |
| 5 | 127605 |
| 6 | 1151470 |
| 7 | 10372560 |
| 8 | 93381541 |
| 9 | 840520395 |
| 10 | 7564945180 |
| 11 | 68085295590 |
| 12 | 612770035411 |
| 13 | 5514937460385 |
| 14 | 49634458601290 |
| 15 | 446710191850620 |
| 16 | 4020391920103681 |
| 17 | 36183527861539575 |
| 18 | 325651752496199800 |
[1,15,160,1530,14071,127605,1151470,10372560, 93381541,840520395,7564945180,68085295590, 612770035411,5514937460385,49634458601290, 446710191850620,4020391920103681, 36183527861539575,325651752496199800] |