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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 20 |
| 5 | 29 |
| 6 | 85 |
| 7 | 125 |
| 8 | 325 |
| 9 | 471 |
| 10 | 1348 |
| 11 | 2005 |
| 12 | 5205 |
| 13 | 7541 |
| 14 | 21589 |
| 15 | 32085 |
| 16 | 82965 |
| 17 | 120277 |
| 18 | 344389 |
| 19 | 515413 |
| 20 | 1332245 |
| 21 | 1930709 |
| 22 | 5525845 |
| 23 | 8213845 |
| 24 | 21239125 |
| 25 | 30790997 |
| 26 | 88163669 |
| 27 | 131945813 |
| 28 | 341067093 |
| 29 | 494228821 |
| 30 | 1414530389 |
| 31 | 2102916437 |
| 32 | 5437134165 |
| 33 | 7882528085 |
[1,1,5,7,20,29,85,125,325,471,1348,2005,5205,7541, 21589,32085,82965,120277,344389,515413,1332245, 1930709,5525845,8213845,21239125,30790997, 88163669,131945813,341067093,494228821,1414530389, 2102916437,5437134165,7882528085] |