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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 2 |
| 10 | 2 |
| 11 | 3 |
| 12 | 3 |
| 13 | 5 |
| 14 | 5 |
| 15 | 7 |
| 16 | 8 |
| 17 | 9 |
| 18 | 10 |
| 19 | 12 |
| 20 | 13 |
| 21 | 15 |
| 22 | 17 |
| 23 | 19 |
| 24 | 21 |
| 25 | 25 |
| 26 | 27 |
| 27 | 31 |
| 28 | 35 |
| 29 | 40 |
| 30 | 44 |
| 31 | 50 |
| 32 | 55 |
| 33 | 62 |
| 34 | 68 |
| 35 | 76 |
| 36 | 83 |
| 37 | 93 |
| 38 | 101 |
| 39 | 112 |
| 40 | 122 |
| 41 | 136 |
| 42 | 147 |
| 43 | 163 |
| 44 | 177 |
| 45 | 196 |
| 46 | 213 |
| 47 | 235 |
| 48 | 255 |
| 49 | 281 |
| 50 | 305 |
| 51 | 335 |
| 52 | 363 |
| 53 | 398 |
| 54 | 431 |
| 55 | 471 |
| 56 | 510 |
| 57 | 556 |
| 58 | 601 |
| 59 | 654 |
| 60 | 706 |
| 61 | 768 |
| 62 | 828 |
[0,0,0,0,1,1,1,1,2,2,3,3,5,5,7,8,9,10,12,13,15,17, 19,21,25,27,31,35,40,44,50,55,62,68,76,83,93,101, 112,122,136,147,163,177,196,213,235,255,281,305, 335,363,398,431,471,510,556,601,654,706,768,828] |