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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 8 |
| 3 | 24 |
| 4 | 65 |
| 5 | 150 |
| 6 | 330 |
| 7 | 657 |
| 8 | 1274 |
| 9 | 2338 |
| 10 | 4172 |
| 11 | 7203 |
| 12 | 12171 |
| 13 | 20045 |
| 14 | 32474 |
| 15 | 51623 |
| 16 | 80867 |
| 17 | 124841 |
| 18 | 190406 |
| 19 | 286857 |
| 20 | 427758 |
| 21 | 631367 |
| 22 | 923544 |
| 23 | 1339226 |
| 24 | 1926798 |
| 25 | 2751094 |
| 26 | 3900931 |
| 27 | 5494411 |
| 28 | 7690923 |
| 29 | 10701618 |
| 30 | 14808183 |
| 31 | 20380969 |
| 32 | 27910066 |
| 33 | 38035633 |
| 34 | 51597166 |
| 35 | 69685656 |
[0,1,8,24,65,150,330,657,1274,2338,4172,7203, 12171,20045,32474,51623,80867,124841,190406, 286857,427758,631367,923544,1339226,1926798, 2751094,3900931,5494411,7690923,10701618,14808183, 20380969,27910066,38035633,51597166,69685656] |