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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 5 |
| 8 | 9 |
| 9 | 12 |
| 10 | 17 |
| 11 | 25 |
| 12 | 33 |
| 13 | 44 |
| 14 | 62 |
| 15 | 77 |
| 16 | 104 |
| 17 | 131 |
| 18 | 180 |
| 19 | 222 |
| 20 | 278 |
| 21 | 368 |
| 22 | 454 |
| 23 | 581 |
| 24 | 717 |
| 25 | 883 |
| 26 | 1112 |
| 27 | 1345 |
| 28 | 1745 |
| 29 | 2093 |
| 30 | 2519 |
| 31 | 3068 |
| 32 | 3820 |
| 33 | 4688 |
| 34 | 5570 |
| 35 | 6744 |
| 36 | 8151 |
| 37 | 9738 |
| 38 | 11716 |
| 39 | 14199 |
| 40 | 16723 |
| 41 | 20210 |
| 42 | 24151 |
| 43 | 28582 |
| 44 | 33728 |
| 45 | 39373 |
| 46 | 48163 |
| 47 | 55979 |
| 48 | 65738 |
[1,0,0,0,1,2,4,5,9,12,17,25,33,44,62,77,104,131, 180,222,278,368,454,581,717,883,1112,1345,1745, 2093,2519,3068,3820,4688,5570,6744,8151,9738, 11716,14199,16723,20210,24151,28582,33728,39373, 48163,55979,65738] |