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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 5 |
| 8 | 7 |
| 9 | 8 |
| 10 | 11 |
| 11 | 13 |
| 12 | 17 |
| 13 | 20 |
| 14 | 25 |
| 15 | 30 |
| 16 | 38 |
| 17 | 44 |
| 18 | 54 |
| 19 | 63 |
| 20 | 77 |
| 21 | 90 |
| 22 | 107 |
| 23 | 124 |
| 24 | 148 |
| 25 | 171 |
| 26 | 202 |
| 27 | 231 |
| 28 | 271 |
| 29 | 310 |
| 30 | 360 |
| 31 | 412 |
| 32 | 477 |
| 33 | 542 |
| 34 | 622 |
| 35 | 705 |
| 36 | 809 |
| 37 | 915 |
| 38 | 1042 |
| 39 | 1175 |
| 40 | 1335 |
| 41 | 1501 |
| 42 | 1699 |
| 43 | 1905 |
| 44 | 2148 |
| 45 | 2403 |
| 46 | 2702 |
| 47 | 3018 |
| 48 | 3383 |
| 49 | 3768 |
| 50 | 4212 |
| 51 | 4682 |
| 52 | 5223 |
| 53 | 5794 |
| 54 | 6445 |
[1,1,1,1,2,3,4,5,7,8,11,13,17,20,25,30,38,44,54, 63,77,90,107,124,148,171,202,231,271,310,360,412, 477,542,622,705,809,915,1042,1175,1335,1501,1699, 1905,2148,2403,2702,3018,3383,3768,4212,4682,5223, 5794,6445] |