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| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 9 |
| 11 | 45 |
| 12 | 165 |
| 13 | 495 |
| 14 | 1278 |
| 15 | 2931 |
| 16 | 6111 |
| 17 | 11790 |
| 18 | 21331 |
| 19 | 36594 |
| 20 | 60057 |
| 21 | 94938 |
| 22 | 145296 |
| 23 | 216153 |
| 24 | 313524 |
| 25 | 444483 |
| 26 | 617229 |
| 27 | 841225 |
| 28 | 1127187 |
| 29 | 1487322 |
| 30 | 1935252 |
| 31 | 2486124 |
| 32 | 3156408 |
| 33 | 3964218 |
| 34 | 4928841 |
| 35 | 6071472 |
| 36 | 7414669 |
| 37 | 8983179 |
| 38 | 10802970 |
| 39 | 12902661 |
| 40 | 15311277 |
| 41 | 18061092 |
| 42 | 21185103 |
| 43 | 24720552 |
[1,9,45,165,495,1278,2931,6111,11790,21331,36594, 60057,94938,145296,216153,313524,444483,617229, 841225,1127187,1487322,1935252,2486124,3156408, 3964218,4928841,6071472,7414669,8983179,10802970, 12902661,15311277,18061092,21185103,24720552] |