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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 344 |
| 3 | 16062 |
| 4 | 538672 |
| 5 | 19675348 |
| 6 | 734614472 |
| 7 | 27173404568 |
| 8 | 1004314801728 |
| 9 | 37150257828816 |
| 10 | 1374167316241760 |
| 11 | 50826441572407904 |
| 12 | 1879942732569197184 |
| 13 | 69534653388866844992 |
| 14 | 2571919585157154125440 |
| 15 | 95129106434387390980480 |
[1,344,16062,538672,19675348,734614472, 27173404568,1004314801728,37150257828816, 1374167316241760,50826441572407904, 1879942732569197184,69534653388866844992, 2571919585157154125440,95129106434387390980480] |