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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 8 |
| 12 | 11 |
| 13 | 15 |
| 14 | 20 |
| 15 | 26 |
| 16 | 34 |
| 17 | 45 |
| 18 | 60 |
| 19 | 80 |
| 20 | 107 |
| 21 | 142 |
| 22 | 188 |
| 23 | 249 |
| 24 | 330 |
| 25 | 439 |
| 26 | 584 |
| 27 | 776 |
| 28 | 1030 |
| 29 | 1366 |
| 30 | 1813 |
| 31 | 2408 |
| 32 | 3199 |
| 33 | 4249 |
| 34 | 5642 |
| 35 | 7490 |
| 36 | 9944 |
| 37 | 13204 |
| 38 | 17534 |
| 39 | 23285 |
| 40 | 30920 |
| 41 | 41056 |
| 42 | 54514 |
| 43 | 72384 |
| 44 | 96116 |
| 45 | 127631 |
| 46 | 169478 |
| 47 | 225042 |
| 48 | 298819 |
| 49 | 396783 |
| 50 | 526869 |
| 51 | 699608 |
| 52 | 928981 |
| 53 | 1233552 |
[1,1,1,1,1,1,2,3,4,5,6,8,11,15,20,26,34,45,60,80, 107,142,188,249,330,439,584,776,1030,1366,1813, 2408,3199,4249,5642,7490,9944,13204,17534,23285, 30920,41056,54514,72384,96116,127631,169478, 225042,298819,396783,526869,699608,928981,1233552] |