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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 24 |
| 6 | 45 |
| 7 | 77 |
| 8 | 132 |
| 9 | 213 |
| 10 | 346 |
| 11 | 537 |
| 12 | 834 |
| 13 | 1257 |
| 14 | 1893 |
| 15 | 2778 |
| 16 | 4077 |
| 17 | 5865 |
| 18 | 8421 |
| 19 | 11903 |
| 20 | 16785 |
| 21 | 23364 |
| 22 | 32444 |
| 23 | 44562 |
| 24 | 61041 |
| 25 | 82859 |
| 26 | 112164 |
| 27 | 150639 |
| 28 | 201768 |
| 29 | 268413 |
| 30 | 356100 |
| 31 | 469636 |
| 32 | 617724 |
| 33 | 808236 |
| 34 | 1054802 |
| 35 | 1370127 |
| 36 | 1775286 |
| 37 | 2290610 |
| 38 | 2948427 |
| 39 | 3780717 |
| 40 | 4836814 |
[1,3,6,13,24,45,77,132,213,346,537,834,1257,1893, 2778,4077,5865,8421,11903,16785,23364,32444,44562, 61041,82859,112164,150639,201768,268413,356100, 469636,617724,808236,1054802,1370127,1775286, 2290610,2948427,3780717,4836814] |