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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 1 |
| 16 | 0 |
| 17 | 1 |
| 18 | 1 |
| 19 | 2 |
| 20 | 2 |
| 21 | 5 |
| 22 | 4 |
| 23 | 8 |
| 24 | 9 |
| 25 | 15 |
| 26 | 16 |
| 27 | 27 |
| 28 | 30 |
| 29 | 46 |
| 30 | 55 |
| 31 | 80 |
| 32 | 96 |
| 33 | 139 |
| 34 | 168 |
| 35 | 237 |
| 36 | 293 |
| 37 | 403 |
| 38 | 503 |
| 39 | 687 |
| 40 | 864 |
| 41 | 1164 |
| 42 | 1477 |
| 43 | 1974 |
| 44 | 2516 |
| 45 | 3348 |
| 46 | 4282 |
| 47 | 5668 |
| 48 | 7284 |
| 49 | 9604 |
| 50 | 12374 |
| 51 | 16279 |
| 52 | 21022 |
| 53 | 27597 |
| 54 | 35718 |
| 55 | 46819 |
| 56 | 60693 |
| 57 | 79480 |
| 58 | 103174 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,2,2,5,4,8,9, 15,16,27,30,46,55,80,96,139,168,237,293,403,503, 687,864,1164,1477,1974,2516,3348,4282,5668,7284, 9604,12374,16279,21022,27597,35718,46819,60693, 79480,103174] |