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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 16 |
| 7 | 24 |
| 8 | 37 |
| 9 | 55 |
| 10 | 84 |
| 11 | 124 |
| 12 | 186 |
| 13 | 270 |
| 14 | 394 |
| 15 | 561 |
| 16 | 798 |
| 17 | 1114 |
| 18 | 1553 |
| 19 | 2133 |
| 20 | 2924 |
| 21 | 3966 |
| 22 | 5364 |
| 23 | 7196 |
| 24 | 9629 |
| 25 | 12795 |
| 26 | 16956 |
| 27 | 22344 |
| 28 | 29355 |
| 29 | 38377 |
| 30 | 50026 |
| 31 | 64920 |
| 32 | 84006 |
| 33 | 108275 |
| 34 | 139155 |
| 35 | 178207 |
| 36 | 227601 |
| 37 | 289734 |
| 38 | 367882 |
| 39 | 465726 |
| 40 | 588147 |
[1,0,1,3,6,10,16,24,37,55,84,124,186,270,394,561, 798,1114,1553,2133,2924,3966,5364,7196,9629,12795, 16956,22344,29355,38377,50026,64920,84006,108275, 139155,178207,227601,289734,367882,465726,588147] |