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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 14 |
| 3 | 411 |
| 4 | 21208 |
| 5 | 1703145 |
| 6 | 195285456 |
| 7 | 30113813863 |
| 8 | 5985071842688 |
| 9 | 1485696848042385 |
| 10 | 449588756524844800 |
| 11 | 162668114715527356551 |
| 12 | 69259775641873646754816 |
| 13 | 34243366782512243213286169 |
| 14 | 19439795735713938153732810752 |
| 15 | 12549399357405863545478828022375 |
[1,1,14,411,21208,1703145,195285456,30113813863, 5985071842688,1485696848042385,449588756524844800, 162668114715527356551,69259775641873646754816, 34243366782512243213286169, 19439795735713938153732810752, 12549399357405863545478828022375] |