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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 754 |
| 3 | 22228 |
| 4 | 76630 |
| 5 | 2510674 |
| 6 | 9298730 |
| 7 | 318521414 |
| 8 | 1241196022 |
| 9 | 41049614014 |
| 10 | 168217753216 |
| 11 | 5314116600322 |
| 12 | 22881089512316 |
| 13 | 689018292976294 |
| 14 | 3108875283706072 |
| 15 | 89394192873266794 |
| 16 | 421515136439868122 |
[1,754,22228,76630,2510674,9298730,318521414, 1241196022,41049614014,168217753216,5314116600322, 22881089512316,689018292976294,3108875283706072, 89394192873266794,421515136439868122] |