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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 16 |
| 3 | 350 |
| 4 | 16280 |
| 5 | 1280458 |
| 6 | 151282316 |
| 7 | 25067231982 |
| 8 | 5547679327632 |
| 9 | 1580745016902930 |
| 10 | 563647979697490836 |
| 11 | 245869122688036168950 |
| 12 | 128799713392548410995032 |
| 13 | 79791827954988156443060506 |
[1,2,16,350,16280,1280458,151282316,25067231982, 5547679327632,1580745016902930,563647979697490836, 245869122688036168950,128799713392548410995032, 79791827954988156443060506] |