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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 10 |
| 4 | 190 |
| 5 | 2878 |
| 6 | 45738 |
| 7 | 820118 |
| 8 | 16764354 |
| 9 | 387371878 |
| 10 | 9999815254 |
| 11 | 285310965190 |
| 12 | 8916097744112 |
| 13 | 302875096191666 |
| 14 | 11112006785441430 |
| 15 | 437893890225741870 |
| 16 | 18446744073108471242 |
| 17 | 827240261884003157974 |
| 18 | 39346408075287462440142 |
| 19 | 1978419655660278243860198 |
[0,0,0,10,190,2878,45738,820118,16764354, 387371878,9999815254,285310965190,8916097744112, 302875096191666,11112006785441430, 437893890225741870,18446744073108471242, 827240261884003157974,39346408075287462440142, 1978419655660278243860198] |