| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 2 |
| 8 | 1 |
| 9 | 3 |
| 10 | 2 |
| 11 | 6 |
| 12 | 3 |
| 13 | 9 |
| 14 | 7 |
| 15 | 11 |
| 16 | 11 |
| 17 | 20 |
| 18 | 15 |
| 19 | 28 |
| 20 | 24 |
| 21 | 35 |
| 22 | 36 |
| 23 | 55 |
| 24 | 47 |
| 25 | 73 |
| 26 | 71 |
| 27 | 95 |
| 28 | 96 |
| 29 | 136 |
| 30 | 123 |
| 31 | 180 |
| 32 | 177 |
| 33 | 226 |
| 34 | 235 |
| 35 | 305 |
| 36 | 299 |
| 37 | 403 |
| 38 | 406 |
| 39 | 503 |
| 40 | 523 |
| 41 | 668 |
| 42 | 662 |
| 43 | 852 |
| 44 | 873 |
| 45 | 1052 |
| 46 | 1115 |
| 47 | 1370 |
| 48 | 1391 |
| 49 | 1720 |
| 50 | 1784 |
| 51 | 2125 |
| 52 | 2252 |
| 53 | 2701 |
| 54 | 2786 |
| 55 | 3348 |
| 56 | 3520 |
| 57 | 4116 |
[0,0,0,0,0,1,0,2,1,3,2,6,3,9,7,11,11,20,15,28,24, 35,36,55,47,73,71,95,96,136,123,180,177,226,235, 305,299,403,406,503,523,668,662,852,873,1052,1115, 1370,1391,1720,1784,2125,2252,2701,2786,3348,3520, 4116] |