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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 651 |
| 3 | 180868051 |
| 4 | 95317119801 |
| 5 | 26472137730696901 |
| 6 | 13950766352135999751 |
| 7 | 3874504486629442861646551 |
| 8 | 2041856512426320950146560501 |
| 9 | 567078683619272811125915867157001 |
| 10 | 298849390212849227278846377616002051 |
| 11 | 82998544594567922836927983404875025948251 |
| 12 | 43740075508275731847137544113454050908804401 |
[1,651,180868051,95317119801,26472137730696901, 13950766352135999751,3874504486629442861646551, 2041856512426320950146560501, 567078683619272811125915867157001, 298849390212849227278846377616002051, 82998544594567922836927983404875025948251, 43740075508275731847137544113454050908804401] |