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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 3 |
| 6 | 8 |
| 7 | 13 |
| 8 | 26 |
| 9 | 40 |
| 10 | 69 |
| 11 | 104 |
| 12 | 165 |
| 13 | 241 |
| 14 | 363 |
| 15 | 517 |
| 16 | 750 |
| 17 | 1046 |
| 18 | 1473 |
| 19 | 2018 |
| 20 | 2779 |
| 21 | 3746 |
| 22 | 5063 |
| 23 | 6733 |
| 24 | 8959 |
| 25 | 11769 |
| 26 | 15454 |
| 27 | 20082 |
| 28 | 26068 |
| 29 | 33549 |
| 30 | 43108 |
| 31 | 54997 |
| 32 | 70037 |
| 33 | 88645 |
| 34 | 111979 |
| 35 | 140714 |
| 36 | 176462 |
| 37 | 220280 |
| 38 | 274418 |
| 39 | 340480 |
| 40 | 421593 |
| 41 | 520154 |
| 42 | 640481 |
| 43 | 786104 |
| 44 | 962976 |
[0,0,0,2,3,8,13,26,40,69,104,165,241,363,517,750, 1046,1473,2018,2779,3746,5063,6733,8959,11769, 15454,20082,26068,33549,43108,54997,70037,88645, 111979,140714,176462,220280,274418,340480,421593, 520154,640481,786104,962976] |