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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 9 |
| 8 | 11 |
| 9 | 15 |
| 10 | 20 |
| 11 | 24 |
| 12 | 31 |
| 13 | 38 |
| 14 | 48 |
| 15 | 59 |
| 16 | 72 |
| 17 | 86 |
| 18 | 106 |
| 19 | 125 |
| 20 | 150 |
| 21 | 180 |
| 22 | 213 |
| 23 | 250 |
| 24 | 296 |
| 25 | 347 |
| 26 | 407 |
| 27 | 477 |
| 28 | 555 |
| 29 | 645 |
| 30 | 751 |
| 31 | 869 |
| 32 | 1003 |
| 33 | 1161 |
| 34 | 1334 |
| 35 | 1534 |
| 36 | 1763 |
| 37 | 2018 |
| 38 | 2306 |
| 39 | 2637 |
| 40 | 3002 |
| 41 | 3418 |
| 42 | 3886 |
| 43 | 4409 |
| 44 | 4994 |
| 45 | 5659 |
| 46 | 6390 |
| 47 | 7214 |
| 48 | 8135 |
| 49 | 9160 |
| 50 | 10300 |
| 51 | 11580 |
| 52 | 12990 |
[1,1,1,3,3,5,7,9,11,15,20,24,31,38,48,59,72,86, 106,125,150,180,213,250,296,347,407,477,555,645, 751,869,1003,1161,1334,1534,1763,2018,2306,2637, 3002,3418,3886,4409,4994,5659,6390,7214,8135,9160, 10300,11580,12990] |