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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 3 |
| 9 | 6 |
| 10 | 6 |
| 11 | 10 |
| 12 | 14 |
| 13 | 18 |
| 14 | 24 |
| 15 | 35 |
| 16 | 42 |
| 17 | 58 |
| 18 | 76 |
| 19 | 97 |
| 20 | 124 |
| 21 | 164 |
| 22 | 202 |
| 23 | 261 |
| 24 | 329 |
| 25 | 412 |
| 26 | 514 |
| 27 | 649 |
| 28 | 795 |
| 29 | 992 |
| 30 | 1223 |
| 31 | 1503 |
| 32 | 1839 |
| 33 | 2262 |
| 34 | 2741 |
| 35 | 3346 |
| 36 | 4056 |
| 37 | 4908 |
| 38 | 5919 |
| 39 | 7150 |
| 40 | 8568 |
| 41 | 10297 |
| 42 | 12320 |
| 43 | 14721 |
| 44 | 17542 |
| 45 | 20911 |
| 46 | 24808 |
| 47 | 29456 |
| 48 | 34870 |
| 49 | 41232 |
| 50 | 48652 |
| 51 | 57389 |
[0,0,1,0,1,2,2,3,6,6,10,14,18,24,35,42,58,76,97, 124,164,202,261,329,412,514,649,795,992,1223,1503, 1839,2262,2741,3346,4056,4908,5919,7150,8568, 10297,12320,14721,17542,20911,24808,29456,34870, 41232,48652,57389] |