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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 32 |
| 8 | 4 |
| 9 | 68 |
| 10 | 136 |
| 11 | 272 |
| 12 | 4 |
| 13 | 548 |
| 14 | 1096 |
| 15 | 2192 |
| 16 | 4 |
| 17 | 4388 |
| 18 | 8776 |
| 19 | 17552 |
| 20 | 4 |
| 21 | 35108 |
| 22 | 70216 |
| 23 | 140432 |
| 24 | 4 |
| 25 | 280868 |
| 26 | 561736 |
| 27 | 1123472 |
| 28 | 4 |
| 29 | 2246948 |
| 30 | 4493896 |
| 31 | 8987792 |
| 32 | 4 |
| 33 | 17975588 |
| 34 | 35951176 |
| 35 | 71902352 |
| 36 | 4 |
| 37 | 143804708 |
| 38 | 287609416 |
| 39 | 575218832 |
| 40 | 4 |
[1,1,2,4,8,16,32,4,68,136,272,4,548,1096,2192,4, 4388,8776,17552,4,35108,70216,140432,4,280868, 561736,1123472,4,2246948,4493896,8987792,4, 17975588,35951176,71902352,4,143804708,287609416, 575218832,4] |