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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 0 |
| 7 | 6 |
| 8 | 6 |
| 9 | 27 |
| 10 | 49 |
| 11 | 131 |
| 12 | 279 |
| 13 | 635 |
| 14 | 1370 |
| 15 | 2722 |
| 16 | 5877 |
| 17 | 12170 |
| 18 | 24113 |
| 19 | 47660 |
| 20 | 94470 |
| 21 | 186623 |
| 22 | 355400 |
| 23 | 680074 |
| 24 | 1296600 |
| 25 | 2456115 |
| 26 | 4535638 |
| 27 | 8495447 |
| 28 | 15570655 |
| 29 | 28505689 |
| 30 | 52054671 |
| 31 | 94229227 |
| 32 | 169184891 |
| 33 | 301060621 |
| 34 | 540575365 |
| 35 | 956101463 |
| 36 | 1682865787 |
| 37 | 2936425870 |
| 38 | 5167830927 |
[1,0,6,6,27,49,131,279,635,1370,2722,5877,12170, 24113,47660,94470,186623,355400,680074,1296600, 2456115,4535638,8495447,15570655,28505689, 52054671,94229227,169184891,301060621,540575365, 956101463,1682865787,2936425870,5167830927] |