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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 3 |
| 8 | 4 |
| 9 | 4 |
| 10 | 6 |
| 11 | 5 |
| 12 | 8 |
| 13 | 6 |
| 14 | 10 |
| 15 | 7 |
| 16 | 12 |
| 17 | 8 |
| 18 | 15 |
| 19 | 9 |
| 20 | 18 |
| 21 | 10 |
| 22 | 21 |
| 23 | 11 |
| 24 | 25 |
| 25 | 12 |
| 26 | 29 |
| 27 | 13 |
| 28 | 34 |
| 29 | 14 |
| 30 | 40 |
| 31 | 15 |
| 32 | 46 |
| 33 | 16 |
| 34 | 53 |
| 35 | 17 |
| 36 | 62 |
| 37 | 18 |
| 38 | 71 |
| 39 | 19 |
| 40 | 82 |
| 41 | 20 |
| 42 | 95 |
| 43 | 21 |
| 44 | 109 |
| 45 | 22 |
| 46 | 125 |
| 47 | 23 |
| 48 | 144 |
| 49 | 24 |
| 50 | 165 |
| 51 | 25 |
| 52 | 189 |
| 53 | 26 |
| 54 | 217 |
| 55 | 27 |
| 56 | 248 |
| 57 | 28 |
| 58 | 283 |
| 59 | 29 |
| 60 | 324 |
[0,0,0,1,1,2,3,3,4,4,6,5,8,6,10,7,12,8,15,9,18,10, 21,11,25,12,29,13,34,14,40,15,46,16,53,17,62,18, 71,19,82,20,95,21,109,22,125,23,144,24,165,25,189, 26,217,27,248,28,283,29,324] |