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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 3 |
| 9 | 3 |
| 10 | 4 |
| 11 | 4 |
| 12 | 6 |
| 13 | 6 |
| 14 | 8 |
| 15 | 9 |
| 16 | 11 |
| 17 | 12 |
| 18 | 15 |
| 19 | 16 |
| 20 | 20 |
| 21 | 22 |
| 22 | 26 |
| 23 | 29 |
| 24 | 35 |
| 25 | 38 |
| 26 | 45 |
| 27 | 50 |
| 28 | 58 |
| 29 | 64 |
| 30 | 75 |
| 31 | 82 |
| 32 | 95 |
| 33 | 105 |
| 34 | 120 |
| 35 | 133 |
| 36 | 152 |
| 37 | 167 |
| 38 | 190 |
| 39 | 210 |
| 40 | 237 |
| 41 | 261 |
| 42 | 295 |
| 43 | 324 |
| 44 | 364 |
| 45 | 401 |
| 46 | 448 |
| 47 | 493 |
| 48 | 551 |
| 49 | 604 |
| 50 | 673 |
| 51 | 739 |
| 52 | 820 |
| 53 | 899 |
| 54 | 997 |
| 55 | 1091 |
| 56 | 1207 |
| 57 | 1321 |
| 58 | 1457 |
| 59 | 1593 |
| 60 | 1756 |
| 61 | 1916 |
| 62 | 2108 |
| 63 | 2301 |
[1,0,1,1,1,1,2,2,3,3,4,4,6,6,8,9,11,12,15,16,20, 22,26,29,35,38,45,50,58,64,75,82,95,105,120,133, 152,167,190,210,237,261,295,324,364,401,448,493, 551,604,673,739,820,899,997,1091,1207,1321,1457, 1593,1756,1916,2108,2301] |