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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 178 |
| 3 | 2133 |
| 4 | 24367 |
| 5 | 510086 |
| 6 | 8721984 |
| 7 | 139963008 |
| 8 | 2411616295 |
| 9 | 41118326040 |
| 10 | 691933405246 |
| 11 | 11730820142894 |
| 12 | 198958745197703 |
| 13 | 3367870775672680 |
| 14 | 57045573967623831 |
| 15 | 966471409314594914 |
| 16 | 16370143996952505220 |
[1,178,2133,24367,510086,8721984,139963008, 2411616295,41118326040,691933405246, 11730820142894,198958745197703,3367870775672680, 57045573967623831,966471409314594914, 16370143996952505220] |