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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 0 |
| 6 | 2 |
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 2 |
| 11 | 3 |
| 12 | 6 |
| 13 | 6 |
| 14 | 7 |
| 15 | 11 |
| 16 | 11 |
| 17 | 14 |
| 18 | 21 |
| 19 | 24 |
| 20 | 29 |
| 21 | 38 |
| 22 | 44 |
| 23 | 54 |
| 24 | 69 |
| 25 | 81 |
| 26 | 98 |
| 27 | 123 |
| 28 | 144 |
| 29 | 174 |
| 30 | 213 |
| 31 | 253 |
| 32 | 300 |
| 33 | 363 |
| 34 | 427 |
| 35 | 508 |
| 36 | 608 |
| 37 | 716 |
| 38 | 846 |
| 39 | 1004 |
| 40 | 1176 |
| 41 | 1384 |
| 42 | 1631 |
| 43 | 1908 |
| 44 | 2230 |
| 45 | 2616 |
| 46 | 3046 |
| 47 | 3553 |
| 48 | 4143 |
| 49 | 4813 |
| 50 | 5586 |
| 51 | 6492 |
| 52 | 7509 |
| 53 | 8693 |
| 54 | 10057 |
| 55 | 11608 |
| 56 | 13383 |
| 57 | 15435 |
| 58 | 17753 |
| 59 | 20418 |
| 60 | 23463 |
| 61 | 26923 |
| 62 | 30864 |
[0,0,1,0,0,2,1,1,3,2,3,6,6,7,11,11,14,21,24,29,38, 44,54,69,81,98,123,144,174,213,253,300,363,427, 508,608,716,846,1004,1176,1384,1631,1908,2230, 2616,3046,3553,4143,4813,5586,6492,7509,8693, 10057,11608,13383,15435,17753,20418,23463,26923, 30864] |