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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 29 |
| 4 | 1721 |
| 5 | 163386 |
| 6 | 22831355 |
| 7 | 4420321081 |
| 8 | 1133879136649 |
| 9 | 372419001449076 |
| 10 | 152466248712342181 |
| 11 | 76134462292157828285 |
| 12 | 45552714996556390334921 |
| 13 | 32173493282909179882613934 |
| 14 | 26487410329744429030530295991 |
| 15 | 25143126122564855343240882599761 |
| 16 | 27260957330891104469298062949026065 |
[1,0,1,29,1721,163386,22831355,4420321081, 1133879136649,372419001449076,152466248712342181, 76134462292157828285,45552714996556390334921, 32173493282909179882613934, 26487410329744429030530295991, 25143126122564855343240882599761, 27260957330891104469298062949026065] |