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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 3 |
| 3 | 11 |
| 4 | 36 |
| 5 | 79 |
| 6 | 186 |
| 7 | 345 |
| 8 | 672 |
| 9 | 1163 |
| 10 | 2026 |
| 11 | 3273 |
| 12 | 5388 |
| 13 | 8301 |
| 14 | 12912 |
| 15 | 19349 |
| 16 | 28961 |
| 17 | 42071 |
| 18 | 61253 |
| 19 | 86921 |
| 20 | 123404 |
| 21 | 171972 |
| 22 | 239020 |
| 23 | 327386 |
| 24 | 447743 |
| 25 | 604255 |
| 26 | 813645 |
| 27 | 1084657 |
| 28 | 1441643 |
| 29 | 1899450 |
| 30 | 2496510 |
| 31 | 3255653 |
| 32 | 4234822 |
| 33 | 5472953 |
| 34 | 7053217 |
| 35 | 9038784 |
| 36 | 11554020 |
[0,0,3,11,36,79,186,345,672,1163,2026,3273,5388, 8301,12912,19349,28961,42071,61253,86921,123404, 171972,239020,327386,447743,604255,813645,1084657, 1441643,1899450,2496510,3255653,4234822,5472953, 7053217,9038784,11554020] |