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| n | a(n) |
|---|---|
| 0 | 1024 |
| 1 | 248832 |
| 2 | 3200000 |
| 3 | 17210368 |
| 4 | 60466176 |
| 5 | 164916224 |
| 6 | 380204032 |
| 7 | 777600000 |
| 8 | 1453933568 |
| 9 | 2535525376 |
| 10 | 4182119424 |
| 11 | 6590815232 |
| 12 | 10000000000 |
| 13 | 14693280768 |
| 14 | 21003416576 |
| 15 | 29316250624 |
| 16 | 40074642432 |
| 17 | 53782400000 |
| 18 | 71008211968 |
| 19 | 92389579776 |
| 20 | 118636749824 |
| 21 | 150536645632 |
| 22 | 188956800000 |
[1024,248832,3200000,17210368,60466176,164916224, 380204032,777600000,1453933568,2535525376, 4182119424,6590815232,10000000000,14693280768, 21003416576,29316250624,40074642432,53782400000, 71008211968,92389579776,118636749824,150536645632, 188956800000] |