| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 3 |
| 10 | 5 |
| 11 | 5 |
| 12 | 7 |
| 13 | 5 |
| 14 | 6 |
| 15 | 6 |
| 16 | 9 |
| 17 | 7 |
| 18 | 10 |
| 19 | 9 |
| 20 | 14 |
| 21 | 14 |
| 22 | 17 |
| 23 | 19 |
| 24 | 24 |
| 25 | 26 |
| 26 | 30 |
| 27 | 34 |
| 28 | 37 |
| 29 | 40 |
| 30 | 48 |
| 31 | 52 |
| 32 | 58 |
| 33 | 63 |
| 34 | 68 |
| 35 | 75 |
| 36 | 84 |
| 37 | 91 |
| 38 | 101 |
| 39 | 108 |
| 40 | 120 |
| 41 | 131 |
| 42 | 145 |
| 43 | 154 |
| 44 | 170 |
| 45 | 188 |
| 46 | 208 |
| 47 | 222 |
| 48 | 248 |
| 49 | 264 |
| 50 | 294 |
| 51 | 318 |
| 52 | 348 |
| 53 | 378 |
| 54 | 417 |
| 55 | 450 |
| 56 | 490 |
| 57 | 529 |
| 58 | 576 |
| 59 | 622 |
| 60 | 680 |
| 61 | 732 |
| 62 | 795 |
| 63 | 858 |
| 64 | 926 |
| 65 | 997 |
| 66 | 1080 |
| 67 | 1160 |
[0,0,0,1,1,2,2,4,3,5,5,7,5,6,6,9,7,10,9,14,14,17, 19,24,26,30,34,37,40,48,52,58,63,68,75,84,91,101, 108,120,131,145,154,170,188,208,222,248,264,294, 318,348,378,417,450,490,529,576,622,680,732,795, 858,926,997,1080,1160] |