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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 577 |
| 3 | 9114 |
| 4 | 129349 |
| 5 | 1723086 |
| 6 | 22075129 |
| 7 | 275977218 |
| 8 | 3397380877 |
| 9 | 41418850902 |
| 10 | 501892142401 |
| 11 | 6058699871562 |
| 12 | 72968197588885 |
| 13 | 877537225626078 |
| 14 | 10544318356835593 |
| 15 | 126631590349302546 |
| 16 | 1520293638382550173 |
[1,30,577,9114,129349,1723086,22075129,275977218, 3397380877,41418850902,501892142401,6058699871562, 72968197588885,877537225626078,10544318356835593, 126631590349302546,1520293638382550173] |