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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 22 |
| 2 | 462 |
| 3 | 9702 |
| 4 | 203742 |
| 5 | 4278582 |
| 6 | 89850222 |
| 7 | 1886854662 |
| 8 | 39623947902 |
| 9 | 832102905942 |
| 10 | 17474161024782 |
| 11 | 366957381520422 |
| 12 | 7706105011928862 |
| 13 | 161828205250506102 |
| 14 | 3398392310260628142 |
| 15 | 71366238515473190982 |
[1,22,462,9702,203742,4278582,89850222,1886854662, 39623947902,832102905942,17474161024782, 366957381520422,7706105011928862, 161828205250506102,3398392310260628142, 71366238515473190982] |