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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | 6 |
| 9 | 11 |
| 10 | 16 |
| 11 | 26 |
| 12 | 41 |
| 13 | 66 |
| 14 | 106 |
| 15 | 166 |
| 16 | 266 |
| 17 | 421 |
| 18 | 671 |
| 19 | 1066 |
| 20 | 1696 |
| 21 | 2696 |
| 22 | 4286 |
| 23 | 6816 |
| 24 | 10836 |
| 25 | 17231 |
| 26 | 27396 |
| 27 | 43561 |
| 28 | 69261 |
| 29 | 110126 |
| 30 | 175101 |
| 31 | 278411 |
| 32 | 442676 |
| 33 | 703856 |
| 34 | 1119136 |
| 35 | 1779431 |
| 36 | 2829306 |
| 37 | 4498611 |
| 38 | 7152816 |
| 39 | 11373016 |
| 40 | 18083156 |
| 41 | 28752316 |
[1,1,1,1,1,1,1,6,6,11,16,26,41,66,106,166,266,421, 671,1066,1696,2696,4286,6816,10836,17231,27396, 43561,69261,110126,175101,278411,442676,703856, 1119136,1779431,2829306,4498611,7152816,11373016, 18083156,28752316] |