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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 12 |
| 5 | 21 |
| 6 | 40 |
| 7 | 79 |
| 8 | 158 |
| 9 | 315 |
| 10 | 625 |
| 11 | 1246 |
| 12 | 2492 |
| 13 | 4983 |
| 14 | 9963 |
| 15 | 19921 |
| 16 | 39845 |
| 17 | 79689 |
| 18 | 159361 |
| 19 | 318726 |
| 20 | 637462 |
| 21 | 1274919 |
| 22 | 2549835 |
| 23 | 5099651 |
| 24 | 10199302 |
| 25 | 20398665 |
| 26 | 40797328 |
| 27 | 81594627 |
| 28 | 163189198 |
| 29 | 326378285 |
| 30 | 652756723 |
| 31 | 1305513584 |
| 32 | 2611027095 |
| 33 | 5222054082 |
| 34 | 10444108052 |
[1,2,4,7,12,21,40,79,158,315,625,1246,2492,4983, 9963,19921,39845,79689,159361,318726,637462, 1274919,2549835,5099651,10199302,20398665, 40797328,81594627,163189198,326378285,652756723, 1305513584,2611027095,5222054082,10444108052] |