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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 14 |
| 5 | 26 |
| 6 | 48 |
| 7 | 88 |
| 8 | 146 |
| 9 | 236 |
| 10 | 394 |
| 11 | 674 |
| 12 | 1060 |
| 13 | 1640 |
| 14 | 2536 |
| 15 | 4086 |
| 16 | 6470 |
| 17 | 10292 |
| 18 | 16374 |
| 19 | 25720 |
| 20 | 39332 |
| 21 | 60154 |
| 22 | 92486 |
| 23 | 144218 |
| 24 | 217772 |
| 25 | 327898 |
| 26 | 494384 |
| 27 | 745096 |
| 28 | 1089186 |
| 29 | 1587432 |
| 30 | 2338018 |
| 31 | 3460572 |
| 32 | 4977860 |
| 33 | 7197148 |
| 34 | 10395464 |
| 35 | 14991916 |
| 36 | 20924630 |
| 37 | 28852352 |
[1,2,4,8,14,26,48,88,146,236,394,674,1060,1640, 2536,4086,6470,10292,16374,25720,39332,60154, 92486,144218,217772,327898,494384,745096,1089186, 1587432,2338018,3460572,4977860,7197148,10395464, 14991916,20924630,28852352] |