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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 2 |
| 11 | 1 |
| 12 | 2 |
| 13 | 1 |
| 14 | 2 |
| 15 | 3 |
| 16 | 3 |
| 17 | 3 |
| 18 | 5 |
| 19 | 4 |
| 20 | 6 |
| 21 | 7 |
| 22 | 7 |
| 23 | 8 |
| 24 | 10 |
| 25 | 10 |
| 26 | 11 |
| 27 | 13 |
| 28 | 13 |
| 29 | 14 |
| 30 | 18 |
| 31 | 17 |
| 32 | 19 |
| 33 | 22 |
| 34 | 23 |
| 35 | 26 |
| 36 | 31 |
| 37 | 31 |
| 38 | 34 |
| 39 | 38 |
| 40 | 41 |
| 41 | 44 |
| 42 | 51 |
| 43 | 51 |
| 44 | 56 |
| 45 | 62 |
| 46 | 66 |
| 47 | 70 |
| 48 | 80 |
| 49 | 80 |
| 50 | 89 |
| 51 | 96 |
| 52 | 101 |
| 53 | 107 |
| 54 | 120 |
| 55 | 122 |
| 56 | 132 |
| 57 | 143 |
| 58 | 149 |
| 59 | 157 |
| 60 | 176 |
| 61 | 176 |
| 62 | 190 |
| 63 | 204 |
| 64 | 213 |
| 65 | 226 |
| 66 | 248 |
| 67 | 252 |
| 68 | 271 |
| 69 | 290 |
| 70 | 305 |
| 71 | 319 |
| 72 | 348 |
| 73 | 355 |
[0,0,0,0,1,1,1,1,1,2,1,2,1,2,3,3,3,5,4,6,7,7,8,10, 10,11,13,13,14,18,17,19,22,23,26,31,31,34,38,41, 44,51,51,56,62,66,70,80,80,89,96,101,107,120,122, 132,143,149,157,176,176,190,204,213,226,248,252, 271,290,305,319,348,355] |