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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 3 |
| 9 | 4 |
| 10 | 7 |
| 11 | 7 |
| 12 | 10 |
| 13 | 18 |
| 14 | 18 |
| 15 | 26 |
| 16 | 45 |
| 17 | 44 |
| 18 | 64 |
| 19 | 113 |
| 20 | 112 |
| 21 | 163 |
| 22 | 287 |
| 23 | 285 |
| 24 | 416 |
| 25 | 733 |
| 26 | 731 |
| 27 | 1067 |
| 28 | 1885 |
| 29 | 1885 |
| 30 | 2755 |
| 31 | 4873 |
| 32 | 4881 |
| 33 | 7147 |
| 34 | 12659 |
| 35 | 12697 |
| 36 | 18613 |
| 37 | 33007 |
| 38 | 33143 |
| 39 | 48638 |
| 40 | 86337 |
| 41 | 86777 |
| 42 | 127463 |
| 43 | 226454 |
| 44 | 227795 |
| 45 | 334864 |
| 46 | 595382 |
| 47 | 599342 |
| 48 | 881657 |
[1,0,1,1,1,2,3,3,4,7,7,10,18,18,26,45,44,64,113, 112,163,287,285,416,733,731,1067,1885,1885,2755, 4873,4881,7147,12659,12697,18613,33007,33143, 48638,86337,86777,127463,226454,227795,334864, 595382,599342,881657] |