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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 8 |
| 4 | 29 |
| 5 | 82 |
| 6 | 198 |
| 7 | 426 |
| 8 | 841 |
| 9 | 1556 |
| 10 | 2726 |
| 11 | 4568 |
| 12 | 7373 |
| 13 | 11522 |
| 14 | 17507 |
| 15 | 25958 |
| 16 | 37658 |
| 17 | 53582 |
| 18 | 74924 |
| 19 | 103130 |
| 20 | 139938 |
| 21 | 187426 |
| 22 | 248044 |
| 23 | 324678 |
| 24 | 420698 |
| 25 | 540014 |
| 26 | 687141 |
| 27 | 867274 |
| 28 | 1086343 |
| 29 | 1351108 |
| 30 | 1669234 |
| 31 | 2049376 |
| 32 | 2501275 |
| 33 | 3035866 |
| 34 | 3665362 |
[1,8,29,82,198,426,841,1556,2726,4568,7373,11522, 17507,25958,37658,53582,74924,103130,139938, 187426,248044,324678,420698,540014,687141,867274, 1086343,1351108,1669234,2049376,2501275,3035866, 3665362] |