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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 14 |
| 4 | 32 |
| 5 | 66 |
| 6 | 138 |
| 7 | 266 |
| 8 | 512 |
| 9 | 948 |
| 10 | 1730 |
| 11 | 3074 |
| 12 | 5408 |
| 13 | 9306 |
| 14 | 15854 |
| 15 | 26594 |
| 16 | 44150 |
| 17 | 72378 |
| 18 | 117620 |
| 19 | 189074 |
| 20 | 301516 |
| 21 | 476518 |
| 22 | 747514 |
| 23 | 1163470 |
| 24 | 1798920 |
| 25 | 2762040 |
| 26 | 4215194 |
| 27 | 6393196 |
| 28 | 9642596 |
| 29 | 14462518 |
| 30 | 21581386 |
| 31 | 32040562 |
| 32 | 47345342 |
| 33 | 69635866 |
| 34 | 101974722 |
| 35 | 148692638 |
[1,2,6,14,32,66,138,266,512,948,1730,3074,5408, 9306,15854,26594,44150,72378,117620,189074,301516, 476518,747514,1163470,1798920,2762040,4215194, 6393196,9642596,14462518,21581386,32040562, 47345342,69635866,101974722,148692638] |