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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 1 |
| 6 | 2 |
| 7 | 4 |
| 8 | 4 |
| 9 | 4 |
| 10 | 5 |
| 11 | 8 |
| 12 | 9 |
| 13 | 10 |
| 14 | 13 |
| 15 | 14 |
| 16 | 21 |
| 17 | 24 |
| 18 | 31 |
| 19 | 41 |
| 20 | 52 |
| 21 | 67 |
| 22 | 89 |
| 23 | 110 |
| 24 | 134 |
| 25 | 182 |
| 26 | 219 |
| 27 | 280 |
| 28 | 337 |
| 29 | 429 |
| 30 | 523 |
| 31 | 640 |
| 32 | 785 |
| 33 | 959 |
| 34 | 1168 |
| 35 | 1416 |
| 36 | 1714 |
| 37 | 2083 |
| 38 | 2482 |
| 39 | 2971 |
| 40 | 3596 |
| 41 | 4282 |
| 42 | 5103 |
| 43 | 6079 |
| 44 | 7236 |
| 45 | 8555 |
| 46 | 10176 |
| 47 | 11958 |
| 48 | 14129 |
| 49 | 16668 |
| 50 | 19545 |
| 51 | 22949 |
| 52 | 26939 |
[0,0,0,0,2,1,2,4,4,4,5,8,9,10,13,14,21,24,31,41, 52,67,89,110,134,182,219,280,337,429,523,640,785, 959,1168,1416,1714,2083,2482,2971,3596,4282,5103, 6079,7236,8555,10176,11958,14129,16668,19545, 22949,26939] |