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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 6 |
| 3 | 25 |
| 4 | 70 |
| 5 | 187 |
| 6 | 364 |
| 7 | 697 |
| 8 | 1102 |
| 9 | 1771 |
| 10 | 2900 |
| 11 | 3999 |
| 12 | 5920 |
| 13 | 8077 |
| 14 | 10234 |
| 15 | 13207 |
| 16 | 17384 |
| 17 | 22479 |
| 18 | 26840 |
| 19 | 33567 |
| 20 | 40328 |
| 21 | 46647 |
| 22 | 56248 |
| 23 | 65653 |
| 24 | 77786 |
| 25 | 93411 |
| 26 | 107060 |
| 27 | 119583 |
| 28 | 135248 |
| 29 | 149439 |
| 30 | 167240 |
| 31 | 202311 |
| 32 | 225320 |
| 33 | 253587 |
| 34 | 276332 |
| 35 | 316923 |
| 36 | 343676 |
| 37 | 381039 |
| 38 | 421192 |
| 39 | 458749 |
[0,6,25,70,187,364,697,1102,1771,2900,3999,5920, 8077,10234,13207,17384,22479,26840,33567,40328, 46647,56248,65653,77786,93411,107060,119583, 135248,149439,167240,202311,225320,253587,276332, 316923,343676,381039,421192,458749] |