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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 36 |
| 4 | 317 |
| 5 | 5624 |
| 6 | 251610 |
| 7 | 33642660 |
| 8 | 14685630688 |
| 9 | 21467043671008 |
| 10 | 105735224248507784 |
| 11 | 1764356230257807614296 |
| 12 | 100455994644460412263071692 |
| 13 | 19674097197480928600253198363072 |
| 14 | 13363679231028322645152300040033513414 |
| 15 | 31735555932041230032311939400670284689732948 |
[1,2,7,36,317,5624,251610,33642660,14685630688, 21467043671008,105735224248507784, 1764356230257807614296, 100455994644460412263071692, 19674097197480928600253198363072, 13363679231028322645152300040033513414, 31735555932041230032311939400670284689732948] |