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| n | a(n) |
|---|---|
| 1 | 4640 |
| 2 | 22472 |
| 3 | 106304 |
| 4 | 716800 |
| 5 | 4319616 |
| 6 | 34000600 |
| 7 | 226756256 |
| 8 | 1873475872 |
| 9 | 13046763360 |
| 10 | 108927798728 |
| 11 | 775259184232 |
| 12 | 6465552671224 |
| 13 | 46607527471896 |
| 14 | 387135535384352 |
| 15 | 2814016270828984 |
| 16 | 23274895181188384 |
| 17 | 170164969520406888 |
[4640,22472,106304,716800,4319616,34000600, 226756256,1873475872,13046763360,108927798728, 775259184232,6465552671224,46607527471896, 387135535384352,2814016270828984, 23274895181188384,170164969520406888] |