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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 199 |
| 4 | 2676 |
| 5 | 65469 |
| 6 | 1209129 |
| 7 | 24330731 |
| 8 | 483906047 |
| 9 | 9919457739 |
| 10 | 209006411538 |
| 11 | 4550241332823 |
| 12 | 102418431583071 |
| 13 | 2385231119694273 |
| 14 | 57488444625865101 |
| 15 | 1433825413465384003 |
| 16 | 36995367724604395132 |
[0,1,1,199,2676,65469,1209129,24330731,483906047, 9919457739,209006411538,4550241332823, 102418431583071,2385231119694273, 57488444625865101,1433825413465384003, 36995367724604395132] |