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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 45 |
| 3 | 4593 |
| 4 | 732963 |
| 5 | 155242003 |
| 6 | 40007492715 |
| 7 | 11910942902211 |
| 8 | 3961395353371797 |
| 9 | 1438326441446892453 |
| 10 | 560815045483180502313 |
| 11 | 231969721919492199940197 |
| 12 | 100843924627856371008805767 |
| 13 | 45742671500990337278105740455 |
| 14 | 21524779658986553968372985081175 |
[1,1,45,4593,732963,155242003,40007492715, 11910942902211,3961395353371797, 1438326441446892453,560815045483180502313, 231969721919492199940197, 100843924627856371008805767, 45742671500990337278105740455, 21524779658986553968372985081175] |