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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 18 |
| 6 | 30 |
| 7 | 48 |
| 8 | 75 |
| 9 | 114 |
| 10 | 170 |
| 11 | 252 |
| 12 | 366 |
| 13 | 526 |
| 14 | 744 |
| 15 | 1044 |
| 16 | 1451 |
| 17 | 1998 |
| 18 | 2730 |
| 19 | 3700 |
| 20 | 4986 |
| 21 | 6672 |
| 22 | 8876 |
| 23 | 11736 |
| 24 | 15438 |
| 25 | 20207 |
| 26 | 26322 |
| 27 | 34134 |
| 28 | 44072 |
| 29 | 56682 |
| 30 | 72612 |
| 31 | 92680 |
| 32 | 117867 |
| 33 | 149400 |
| 34 | 188758 |
| 35 | 237744 |
| 36 | 298554 |
| 37 | 373838 |
| 38 | 466836 |
| 39 | 581412 |
| 40 | 722266 |
| 41 | 895014 |
[1,1,3,6,11,18,30,48,75,114,170,252,366,526,744, 1044,1451,1998,2730,3700,4986,6672,8876,11736, 15438,20207,26322,34134,44072,56682,72612,92680, 117867,149400,188758,237744,298554,373838,466836, 581412,722266,895014] |