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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 3 |
| 9 | 1 |
| 10 | 3 |
| 11 | 1 |
| 12 | 8 |
| 13 | 3 |
| 14 | 9 |
| 15 | 6 |
| 16 | 16 |
| 17 | 9 |
| 18 | 24 |
| 19 | 17 |
| 20 | 35 |
| 21 | 29 |
| 22 | 49 |
| 23 | 45 |
| 24 | 81 |
| 25 | 73 |
| 26 | 110 |
| 27 | 115 |
| 28 | 166 |
| 29 | 166 |
| 30 | 240 |
| 31 | 250 |
| 32 | 347 |
| 33 | 372 |
| 34 | 491 |
| 35 | 539 |
| 36 | 715 |
| 37 | 776 |
| 38 | 988 |
| 39 | 1109 |
| 40 | 1393 |
| 41 | 1553 |
| 42 | 1935 |
| 43 | 2178 |
| 44 | 2676 |
| 45 | 3034 |
| 46 | 3674 |
| 47 | 4176 |
| 48 | 5056 |
| 49 | 5734 |
| 50 | 6862 |
| 51 | 7834 |
| 52 | 9316 |
| 53 | 10615 |
| 54 | 12576 |
| 55 | 14341 |
| 56 | 16890 |
[0,0,0,1,0,1,0,3,1,3,1,8,3,9,6,16,9,24,17,35,29, 49,45,81,73,110,115,166,166,240,250,347,372,491, 539,715,776,988,1109,1393,1553,1935,2178,2676, 3034,3674,4176,5056,5734,6862,7834,9316,10615, 12576,14341,16890] |