| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 2 |
| 8 | 3 |
| 9 | 3 |
| 10 | 4 |
| 11 | 5 |
| 12 | 5 |
| 13 | 6 |
| 14 | 7 |
| 15 | 8 |
| 16 | 9 |
| 17 | 10 |
| 18 | 11 |
| 19 | 12 |
| 20 | 14 |
| 21 | 15 |
| 22 | 17 |
| 23 | 19 |
| 24 | 20 |
| 25 | 23 |
| 26 | 25 |
| 27 | 27 |
| 28 | 30 |
| 29 | 33 |
| 30 | 35 |
| 31 | 39 |
| 32 | 42 |
| 33 | 46 |
| 34 | 50 |
| 35 | 54 |
| 36 | 58 |
| 37 | 63 |
| 38 | 68 |
| 39 | 73 |
| 40 | 79 |
| 41 | 85 |
| 42 | 90 |
| 43 | 98 |
| 44 | 105 |
| 45 | 112 |
| 46 | 121 |
| 47 | 128 |
| 48 | 137 |
| 49 | 147 |
| 50 | 156 |
| 51 | 167 |
| 52 | 178 |
| 53 | 189 |
| 54 | 201 |
| 55 | 215 |
| 56 | 228 |
| 57 | 242 |
| 58 | 258 |
| 59 | 272 |
| 60 | 289 |
| 61 | 307 |
| 62 | 324 |
| 63 | 344 |
| 64 | 364 |
| 65 | 383 |
| 66 | 407 |
| 67 | 429 |
[0,1,1,1,2,2,2,3,3,4,5,5,6,7,8,9,10,11,12,14,15, 17,19,20,23,25,27,30,33,35,39,42,46,50,54,58,63, 68,73,79,85,90,98,105,112,121,128,137,147,156,167, 178,189,201,215,228,242,258,272,289,307,324,344, 364,383,407,429] |