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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 5 |
| 6 | 9 |
| 7 | 22 |
| 8 | 47 |
| 9 | 95 |
| 10 | 197 |
| 11 | 394 |
| 12 | 819 |
| 13 | 1701 |
| 14 | 3493 |
| 15 | 7116 |
| 16 | 14361 |
| 17 | 28758 |
| 18 | 57108 |
| 19 | 112520 |
| 20 | 219936 |
| 21 | 426311 |
| 22 | 819230 |
| 23 | 1560326 |
| 24 | 2944805 |
| 25 | 5505613 |
| 26 | 10195038 |
| 27 | 18696068 |
| 28 | 33951438 |
| 29 | 61053269 |
| 30 | 108723478 |
| 31 | 191753754 |
| 32 | 334989788 |
| 33 | 579778121 |
| 34 | 994310140 |
[1,1,2,2,5,9,22,47,95,197,394,819,1701,3493,7116, 14361,28758,57108,112520,219936,426311,819230, 1560326,2944805,5505613,10195038,18696068, 33951438,61053269,108723478,191753754,334989788, 579778121,994310140] |