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| n | a(n) |
|---|---|
| 10 | 768 |
| 11 | 2310 |
| 12 | 11407 |
| 13 | 44187 |
| 14 | 200044 |
| 15 | 680160 |
| 16 | 2769674 |
| 17 | 9826918 |
| 18 | 38483206 |
| 19 | 135059866 |
| 20 | 515249581 |
| 21 | 1829452107 |
| 22 | 6941537898 |
| 23 | 24678730371 |
| 24 | 92755537994 |
| 25 | 333149285650 |
| 26 | 1252530682570 |
| 27 | 4513808634840 |
| 28 | 16936935284163 |
| 29 | 61508180909442 |
| 30 | 231189178986445 |
| 31 | 843098892380280 |
[768,2310,11407,44187,200044,680160,2769674, 9826918,38483206,135059866,515249581,1829452107, 6941537898,24678730371,92755537994,333149285650, 1252530682570,4513808634840,16936935284163, 61508180909442,231189178986445,843098892380280] |