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| n | a(n) |
|---|---|
| 12 | 1 |
| 13 | 797161 |
| 14 | 476599444231 |
| 15 | 263026177881648511 |
| 16 | 141530177899268957392924 |
| 17 | 75525744222315755534269847164 |
| 18 | 40192610828533997938427918835113044 |
| 19 | 21369772545260475331545384574852469714164 |
| 20 | 11358504503408920628447755309084790198295654610 |
[1,797161,476599444231,263026177881648511, 141530177899268957392924, 75525744222315755534269847164, 40192610828533997938427918835113044, 21369772545260475331545384574852469714164, 11358504503408920628447755309084790198295654610] |