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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 35 |
| 3 | 485 |
| 4 | 15200 |
| 5 | 1144664 |
| 6 | 215155493 |
| 7 | 103674882878 |
| 8 | 130648799730635 |
| 9 | 437302448840089232 |
| 10 | 3936208033244539574405 |
| 11 | 96244898501021613327012635 |
| 12 | 6446494058446469307795159512465 |
| 13 | 1191218783863555524342034469450207222 |
[1,5,35,485,15200,1144664,215155493,103674882878, 130648799730635,437302448840089232, 3936208033244539574405,96244898501021613327012635, 6446494058446469307795159512465, 1191218783863555524342034469450207222] |