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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 8 |
| 5 | 30 |
| 6 | 88 |
| 7 | 199 |
| 8 | 408 |
| 9 | 748 |
| 10 | 1280 |
| 11 | 2053 |
| 12 | 3168 |
| 13 | 4666 |
| 14 | 6712 |
| 15 | 9363 |
| 16 | 12728 |
| 17 | 16952 |
| 18 | 22256 |
| 19 | 28681 |
| 20 | 36536 |
| 21 | 45870 |
| 22 | 56936 |
| 23 | 69967 |
| 24 | 85264 |
| 25 | 102860 |
| 26 | 123232 |
| 27 | 146557 |
| 28 | 173128 |
| 29 | 203138 |
| 30 | 237192 |
| 31 | 275243 |
| 32 | 318104 |
| 33 | 365856 |
| 34 | 418912 |
| 35 | 477649 |
| 36 | 542392 |
| 37 | 613406 |
| 38 | 691848 |
[0,0,1,8,30,88,199,408,748,1280,2053,3168,4666, 6712,9363,12728,16952,22256,28681,36536,45870, 56936,69967,85264,102860,123232,146557,173128, 203138,237192,275243,318104,365856,418912,477649, 542392,613406,691848] |