| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 1 |
| 8 | 2 |
| 9 | 2 |
| 10 | 3 |
| 11 | 2 |
| 12 | 4 |
| 13 | 3 |
| 14 | 5 |
| 15 | 6 |
| 16 | 7 |
| 17 | 7 |
| 18 | 11 |
| 19 | 11 |
| 20 | 16 |
| 21 | 19 |
| 22 | 24 |
| 23 | 28 |
| 24 | 39 |
| 25 | 46 |
| 26 | 60 |
| 27 | 75 |
| 28 | 97 |
| 29 | 120 |
| 30 | 159 |
| 31 | 197 |
| 32 | 257 |
| 33 | 327 |
| 34 | 422 |
| 35 | 539 |
| 36 | 700 |
| 37 | 892 |
| 38 | 1157 |
| 39 | 1488 |
| 40 | 1928 |
| 41 | 2479 |
| 42 | 3219 |
| 43 | 4148 |
| 44 | 5383 |
| 45 | 6961 |
| 46 | 9029 |
| 47 | 11687 |
| 48 | 15184 |
| 49 | 19673 |
| 50 | 25564 |
| 51 | 33174 |
| 52 | 43125 |
| 53 | 56010 |
| 54 | 72868 |
| 55 | 94719 |
| 56 | 123283 |
[0,1,1,1,1,2,1,2,2,3,2,4,3,5,6,7,7,11,11,16,19,24, 28,39,46,60,75,97,120,159,197,257,327,422,539,700, 892,1157,1488,1928,2479,3219,4148,5383,6961,9029, 11687,15184,19673,25564,33174,43125,56010,72868, 94719,123283] |