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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 4 |
| 10 | 6 |
| 11 | 7 |
| 12 | 10 |
| 13 | 11 |
| 14 | 15 |
| 15 | 16 |
| 16 | 22 |
| 17 | 25 |
| 18 | 31 |
| 19 | 35 |
| 20 | 45 |
| 21 | 51 |
| 22 | 61 |
| 23 | 70 |
| 24 | 85 |
| 25 | 98 |
| 26 | 116 |
| 27 | 131 |
| 28 | 156 |
| 29 | 176 |
| 30 | 209 |
| 31 | 238 |
| 32 | 276 |
| 33 | 314 |
| 34 | 356 |
| 35 | 411 |
| 36 | 479 |
| 37 | 539 |
| 38 | 612 |
| 39 | 688 |
| 40 | 792 |
| 41 | 891 |
| 42 | 1022 |
| 43 | 1149 |
| 44 | 1295 |
| 45 | 1462 |
| 46 | 1641 |
| 47 | 1831 |
| 48 | 2088 |
| 49 | 2346 |
| 50 | 2637 |
| 51 | 2941 |
| 52 | 3277 |
| 53 | 3648 |
| 54 | 4097 |
| 55 | 4575 |
[0,0,0,0,1,1,2,2,4,4,6,7,10,11,15,16,22,25,31,35, 45,51,61,70,85,98,116,131,156,176,209,238,276,314, 356,411,479,539,612,688,792,891,1022,1149,1295, 1462,1641,1831,2088,2346,2637,2941,3277,3648,4097, 4575] |