| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 5 |
| 11 | 7 |
| 12 | 8 |
| 13 | 9 |
| 14 | 10 |
| 15 | 13 |
| 16 | 14 |
| 17 | 16 |
| 18 | 18 |
| 19 | 20 |
| 20 | 23 |
| 21 | 27 |
| 22 | 28 |
| 23 | 32 |
| 24 | 37 |
| 25 | 40 |
| 26 | 44 |
| 27 | 51 |
| 28 | 54 |
| 29 | 60 |
| 30 | 67 |
| 31 | 73 |
| 32 | 81 |
| 33 | 90 |
| 34 | 96 |
| 35 | 107 |
| 36 | 118 |
| 37 | 127 |
| 38 | 139 |
| 39 | 154 |
| 40 | 166 |
| 41 | 181 |
| 42 | 198 |
| 43 | 213 |
| 44 | 232 |
| 45 | 256 |
| 46 | 273 |
| 47 | 297 |
| 48 | 325 |
| 49 | 348 |
| 50 | 377 |
| 51 | 411 |
| 52 | 440 |
| 53 | 476 |
| 54 | 516 |
| 55 | 555 |
| 56 | 598 |
| 57 | 647 |
| 58 | 692 |
| 59 | 746 |
| 60 | 807 |
[1,0,0,1,1,2,2,3,4,5,5,7,8,9,10,13,14,16,18,20,23, 27,28,32,37,40,44,51,54,60,67,73,81,90,96,107,118, 127,139,154,166,181,198,213,232,256,273,297,325, 348,377,411,440,476,516,555,598,647,692,746,807] |