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| n | a(n) |
|---|---|
| 7 | 52 |
| 8 | 495 |
| 9 | 3573 |
| 10 | 22986 |
| 11 | 138140 |
| 12 | 791355 |
| 13 | 4378359 |
| 14 | 23619010 |
| 15 | 124985133 |
| 16 | 651528571 |
| 17 | 3356054226 |
| 18 | 17122003113 |
| 19 | 86672668175 |
| 20 | 435922323548 |
| 21 | 2180749707230 |
| 22 | 10860449611842 |
| 23 | 53881317215173 |
| 24 | 266455227999826 |
| 25 | 1314042578677412 |
| 26 | 6464913802646613 |
| 27 | 31741357154688581 |
| 28 | 155566738708385012 |
[52,495,3573,22986,138140,791355,4378359,23619010, 124985133,651528571,3356054226,17122003113, 86672668175,435922323548,2180749707230, 10860449611842,53881317215173,266455227999826, 1314042578677412,6464913802646613, 31741357154688581,155566738708385012] |