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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 13 |
| 3 | 46 |
| 4 | 120 |
| 5 | 260 |
| 6 | 497 |
| 7 | 868 |
| 8 | 1416 |
| 9 | 2190 |
| 10 | 3245 |
| 11 | 4642 |
| 12 | 6448 |
| 13 | 8736 |
| 14 | 11585 |
| 15 | 15080 |
| 16 | 19312 |
| 17 | 24378 |
| 18 | 30381 |
| 19 | 37430 |
| 20 | 45640 |
| 21 | 55132 |
| 22 | 66033 |
| 23 | 78476 |
| 24 | 92600 |
| 25 | 108550 |
| 26 | 126477 |
| 27 | 146538 |
| 28 | 168896 |
| 29 | 193720 |
| 30 | 221185 |
| 31 | 251472 |
| 32 | 284768 |
| 33 | 321266 |
| 34 | 361165 |
| 35 | 404670 |
| 36 | 451992 |
[0,2,13,46,120,260,497,868,1416,2190,3245,4642, 6448,8736,11585,15080,19312,24378,30381,37430, 45640,55132,66033,78476,92600,108550,126477, 146538,168896,193720,221185,251472,284768,321266, 361165,404670,451992] |