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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 2 |
| 9 | 3 |
| 10 | 4 |
| 11 | 5 |
| 12 | 6 |
| 13 | 7 |
| 14 | 9 |
| 15 | 11 |
| 16 | 14 |
| 17 | 17 |
| 18 | 21 |
| 19 | 25 |
| 20 | 31 |
| 21 | 37 |
| 22 | 45 |
| 23 | 54 |
| 24 | 65 |
| 25 | 78 |
| 26 | 93 |
| 27 | 111 |
| 28 | 132 |
| 29 | 157 |
| 30 | 186 |
| 31 | 220 |
| 32 | 260 |
| 33 | 307 |
| 34 | 362 |
| 35 | 425 |
| 36 | 499 |
| 37 | 584 |
| 38 | 684 |
| 39 | 799 |
| 40 | 933 |
| 41 | 1087 |
| 42 | 1266 |
| 43 | 1471 |
| 44 | 1708 |
| 45 | 1980 |
| 46 | 2294 |
| 47 | 2654 |
| 48 | 3068 |
| 49 | 3541 |
| 50 | 4084 |
| 51 | 4704 |
| 52 | 5415 |
[1,1,1,1,1,1,2,2,3,4,5,6,7,9,11,14,17,21,25,31,37, 45,54,65,78,93,111,132,157,186,220,260,307,362, 425,499,584,684,799,933,1087,1266,1471,1708,1980, 2294,2654,3068,3541,4084,4704,5415] |