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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 14 |
| 3 | 556 |
| 4 | 43784 |
| 5 | 5723536 |
| 6 | 1119636704 |
| 7 | 306179943616 |
| 8 | 111530881745024 |
| 9 | 52199950088663296 |
| 10 | 30524582707646303744 |
| 11 | 21808622670887632792576 |
| 12 | 18692756653071421750052864 |
| 13 | 18931292094375391032677011456 |
| 14 | 22364730782577535845815428112384 |
[0,1,14,556,43784,5723536,1119636704,306179943616, 111530881745024,52199950088663296, 30524582707646303744,21808622670887632792576, 18692756653071421750052864, 18931292094375391032677011456, 22364730782577535845815428112384] |