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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 63 |
| 4 | 219 |
| 5 | 594 |
| 6 | 1365 |
| 7 | 2786 |
| 8 | 5202 |
| 9 | 9063 |
| 10 | 14938 |
| 11 | 23529 |
| 12 | 35685 |
| 13 | 52416 |
| 14 | 74907 |
| 15 | 104532 |
| 16 | 142868 |
| 17 | 191709 |
| 18 | 253080 |
| 19 | 329251 |
| 20 | 422751 |
| 21 | 536382 |
| 22 | 673233 |
| 23 | 836694 |
| 24 | 1030470 |
| 25 | 1258595 |
| 26 | 1525446 |
| 27 | 1835757 |
| 28 | 2194633 |
| 29 | 2607564 |
| 30 | 3080439 |
| 31 | 3619560 |
| 32 | 4231656 |
[1,12,63,219,594,1365,2786,5202,9063,14938,23529, 35685,52416,74907,104532,142868,191709,253080, 329251,422751,536382,673233,836694,1030470, 1258595,1525446,1835757,2194633,2607564,3080439, 3619560,4231656] |