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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 495 |
| 2 | 70785 |
| 3 | 4723719 |
| 4 | 184225041 |
| 5 | 4789851066 |
| 6 | 90474964580 |
| 7 | 1318349483880 |
| 8 | 15484613937936 |
| 9 | 151561524301616 |
| 10 | 1268665346776464 |
| 11 | 9271015995674160 |
| 12 | 60142744792450320 |
| 13 | 351141102288229176 |
| 14 | 1866359220145419780 |
| 15 | 9118323640906544350 |
| 16 | 41286527321442170625 |
[1,495,70785,4723719,184225041,4789851066, 90474964580,1318349483880,15484613937936, 151561524301616,1268665346776464,9271015995674160, 60142744792450320,351141102288229176, 1866359220145419780,9118323640906544350, 41286527321442170625] |