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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 2 |
| 16 | 4 |
| 17 | 4 |
| 18 | 4 |
| 19 | 4 |
| 20 | 4 |
| 21 | 4 |
| 22 | 5 |
| 23 | 7 |
| 24 | 10 |
| 25 | 11 |
| 26 | 11 |
| 27 | 11 |
| 28 | 11 |
| 29 | 12 |
| 30 | 14 |
| 31 | 18 |
| 32 | 23 |
| 33 | 25 |
| 34 | 26 |
| 35 | 26 |
| 36 | 27 |
| 37 | 29 |
| 38 | 33 |
| 39 | 40 |
| 40 | 47 |
| 41 | 52 |
| 42 | 54 |
| 43 | 56 |
| 44 | 58 |
| 45 | 62 |
| 46 | 70 |
| 47 | 81 |
| 48 | 93 |
| 49 | 101 |
| 50 | 107 |
| 51 | 111 |
| 52 | 116 |
| 53 | 124 |
| 54 | 137 |
| 55 | 155 |
| 56 | 172 |
| 57 | 188 |
| 58 | 199 |
| 59 | 208 |
| 60 | 218 |
| 61 | 233 |
| 62 | 255 |
| 63 | 282 |
| 64 | 311 |
| 65 | 336 |
| 66 | 357 |
| 67 | 374 |
| 68 | 393 |
[0,0,0,0,0,0,0,1,1,1,1,1,1,1,2,4,4,4,4,4,4,5,7,10, 11,11,11,11,12,14,18,23,25,26,26,27,29,33,40,47, 52,54,56,58,62,70,81,93,101,107,111,116,124,137, 155,172,188,199,208,218,233,255,282,311,336,357, 374,393] |