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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 6 |
| 10 | 8 |
| 11 | 12 |
| 12 | 16 |
| 13 | 23 |
| 14 | 31 |
| 15 | 44 |
| 16 | 59 |
| 17 | 83 |
| 18 | 111 |
| 19 | 155 |
| 20 | 207 |
| 21 | 287 |
| 22 | 383 |
| 23 | 528 |
| 24 | 704 |
| 25 | 966 |
| 26 | 1287 |
| 27 | 1759 |
| 28 | 2342 |
| 29 | 3190 |
| 30 | 4245 |
| 31 | 5765 |
| 32 | 7668 |
| 33 | 10387 |
| 34 | 13810 |
| 35 | 18665 |
| 36 | 24807 |
| 37 | 33462 |
| 38 | 44459 |
| 39 | 59866 |
| 40 | 79518 |
| 41 | 106909 |
| 42 | 141968 |
| 43 | 190608 |
| 44 | 253058 |
| 45 | 339341 |
| 46 | 450431 |
| 47 | 603345 |
| 48 | 800718 |
[0,0,1,1,1,2,3,4,6,8,12,16,23,31,44,59,83,111,155, 207,287,383,528,704,966,1287,1759,2342,3190,4245, 5765,7668,10387,13810,18665,24807,33462,44459, 59866,79518,106909,141968,190608,253058,339341, 450431,603345,800718] |