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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 8 |
| 3 | 21 |
| 4 | 43 |
| 5 | 77 |
| 6 | 125 |
| 7 | 190 |
| 8 | 274 |
| 9 | 380 |
| 10 | 510 |
| 11 | 667 |
| 12 | 853 |
| 13 | 1071 |
| 14 | 1323 |
| 15 | 1612 |
| 16 | 1940 |
| 17 | 2310 |
| 18 | 2724 |
| 19 | 3185 |
| 20 | 3695 |
| 21 | 4257 |
| 22 | 4873 |
| 23 | 5546 |
| 24 | 6278 |
| 25 | 7072 |
| 26 | 7930 |
| 27 | 8855 |
| 28 | 9849 |
| 29 | 10915 |
| 30 | 12055 |
| 31 | 13272 |
| 32 | 14568 |
| 33 | 15946 |
| 34 | 17408 |
| 35 | 18957 |
| 36 | 20595 |
| 37 | 22325 |
| 38 | 24149 |
| 39 | 26070 |
| 40 | 28090 |
[0,2,8,21,43,77,125,190,274,380,510,667,853,1071, 1323,1612,1940,2310,2724,3185,3695,4257,4873,5546, 6278,7072,7930,8855,9849,10915,12055,13272,14568, 15946,17408,18957,20595,22325,24149,26070,28090] |