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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 6 |
| 8 | 9 |
| 9 | 14 |
| 10 | 21 |
| 11 | 31 |
| 12 | 47 |
| 13 | 70 |
| 14 | 105 |
| 15 | 158 |
| 16 | 237 |
| 17 | 355 |
| 18 | 533 |
| 19 | 799 |
| 20 | 1199 |
| 21 | 1798 |
| 22 | 2697 |
| 23 | 4046 |
| 24 | 6069 |
| 25 | 9103 |
| 26 | 13655 |
| 27 | 20482 |
| 28 | 30723 |
| 29 | 46085 |
| 30 | 69127 |
| 31 | 103691 |
| 32 | 155536 |
| 33 | 233304 |
| 34 | 349956 |
| 35 | 524934 |
| 36 | 787401 |
| 37 | 1181102 |
| 38 | 1771653 |
| 39 | 2657479 |
| 40 | 3986219 |
| 41 | 5979328 |
| 42 | 8968992 |
[1,1,1,2,3,4,6,9,14,21,31,47,70,105,158,237,355, 533,799,1199,1798,2697,4046,6069,9103,13655,20482, 30723,46085,69127,103691,155536,233304,349956, 524934,787401,1181102,1771653,2657479,3986219, 5979328,8968992] |