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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 16 |
| 5 | 35 |
| 6 | 73 |
| 7 | 151 |
| 8 | 304 |
| 9 | 604 |
| 10 | 1198 |
| 11 | 2362 |
| 12 | 4637 |
| 13 | 9117 |
| 14 | 17954 |
| 15 | 35350 |
| 16 | 69760 |
| 17 | 137959 |
| 18 | 273213 |
| 19 | 542015 |
| 20 | 1076870 |
| 21 | 2141996 |
| 22 | 4265350 |
| 23 | 8501015 |
| 24 | 16954408 |
| 25 | 33833943 |
| 26 | 67549763 |
| 27 | 134912857 |
| 28 | 269532456 |
| 29 | 538603324 |
| 30 | 1076479708 |
| 31 | 2151817116 |
| 32 | 4301833827 |
| 33 | 8600826484 |
[1,3,7,16,35,73,151,304,604,1198,2362,4637,9117, 17954,35350,69760,137959,273213,542015,1076870, 2141996,4265350,8501015,16954408,33833943, 67549763,134912857,269532456,538603324,1076479708, 2151817116,4301833827,8600826484] |