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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 0 |
| 9 | 1 |
| 10 | 2 |
| 11 | 2 |
| 12 | 3 |
| 13 | 2 |
| 14 | 3 |
| 15 | 4 |
| 16 | 5 |
| 17 | 6 |
| 18 | 7 |
| 19 | 8 |
| 20 | 10 |
| 21 | 12 |
| 22 | 14 |
| 23 | 16 |
| 24 | 20 |
| 25 | 23 |
| 26 | 27 |
| 27 | 32 |
| 28 | 37 |
| 29 | 43 |
| 30 | 52 |
| 31 | 59 |
| 32 | 69 |
| 33 | 80 |
| 34 | 93 |
| 35 | 108 |
| 36 | 126 |
| 37 | 144 |
| 38 | 166 |
| 39 | 192 |
| 40 | 222 |
| 41 | 254 |
| 42 | 294 |
| 43 | 334 |
| 44 | 384 |
| 45 | 441 |
| 46 | 504 |
| 47 | 575 |
| 48 | 658 |
| 49 | 748 |
| 50 | 854 |
| 51 | 972 |
| 52 | 1106 |
| 53 | 1254 |
| 54 | 1428 |
| 55 | 1617 |
| 56 | 1834 |
| 57 | 2077 |
| 58 | 2350 |
| 59 | 2656 |
| 60 | 3007 |
[0,0,0,0,1,1,1,0,1,2,2,3,2,3,4,5,6,7,8,10,12,14, 16,20,23,27,32,37,43,52,59,69,80,93,108,126,144, 166,192,222,254,294,334,384,441,504,575,658,748, 854,972,1106,1254,1428,1617,1834,2077,2350,2656, 3007] |