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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 4 |
| 7 | 7 |
| 8 | 9 |
| 9 | 16 |
| 10 | 21 |
| 11 | 33 |
| 12 | 46 |
| 13 | 68 |
| 14 | 95 |
| 15 | 140 |
| 16 | 187 |
| 17 | 266 |
| 18 | 372 |
| 19 | 507 |
| 20 | 683 |
| 21 | 948 |
| 22 | 1256 |
| 23 | 1692 |
| 24 | 2263 |
| 25 | 3003 |
| 26 | 3955 |
| 27 | 5248 |
| 28 | 6824 |
| 29 | 8921 |
| 30 | 11669 |
| 31 | 15058 |
| 32 | 19413 |
| 33 | 25128 |
| 34 | 32149 |
| 35 | 41129 |
| 36 | 52578 |
| 37 | 66740 |
| 38 | 84696 |
| 39 | 107389 |
| 40 | 135310 |
| 41 | 170277 |
| 42 | 214386 |
| 43 | 268151 |
| 44 | 335261 |
| 45 | 418896 |
| 46 | 521204 |
[1,0,0,1,1,3,4,7,9,16,21,33,46,68,95,140,187,266, 372,507,683,948,1256,1692,2263,3003,3955,5248, 6824,8921,11669,15058,19413,25128,32149,41129, 52578,66740,84696,107389,135310,170277,214386, 268151,335261,418896,521204] |