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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 7 |
| 12 | 9 |
| 13 | 10 |
| 14 | 12 |
| 15 | 15 |
| 16 | 18 |
| 17 | 20 |
| 18 | 24 |
| 19 | 28 |
| 20 | 38 |
| 21 | 42 |
| 22 | 48 |
| 23 | 54 |
| 24 | 67 |
| 25 | 89 |
| 26 | 99 |
| 27 | 109 |
| 28 | 126 |
| 29 | 153 |
| 30 | 205 |
| 31 | 225 |
| 32 | 249 |
| 33 | 283 |
| 34 | 347 |
| 35 | 450 |
| 36 | 500 |
| 37 | 548 |
| 38 | 625 |
| 39 | 756 |
| 40 | 966 |
| 41 | 1068 |
| 42 | 1178 |
| 43 | 1335 |
| 44 | 1605 |
| 45 | 2004 |
| 46 | 2224 |
| 47 | 2447 |
| 48 | 2777 |
| 49 | 3297 |
| 50 | 4062 |
| 51 | 4496 |
| 52 | 4961 |
| 53 | 5603 |
| 54 | 6606 |
[1,1,1,1,2,2,3,3,4,5,6,7,9,10,12,15,18,20,24,28, 38,42,48,54,67,89,99,109,126,153,205,225,249,283, 347,450,500,548,625,756,966,1068,1178,1335,1605, 2004,2224,2447,2777,3297,4062,4496,4961,5603,6606] |