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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 14 |
| 3 | 9918 |
| 4 | 964948464 |
| 5 | 25071989721176760 |
| 6 | 284751719071722748492598160 |
| 7 | 2093930745462011336917616846237237197680 |
| 8 | 13828562491398961948219629077212979214965847920914986240 |
| 9 | 108581107327233631269616107897051314148463756259194308769323017769436778880 |
[1,1,14,9918,964948464,25071989721176760, 284751719071722748492598160, 2093930745462011336917616846237237197680, 13828562491398961948219629077212979214965847920914\ 986240, 10858110732723363126961610789705131414846375625919\ 4308769323017769436778880] |