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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 130 |
| 9 | 278 |
| 10 | 654 |
| 11 | 1728 |
| 12 | 5196 |
| 13 | 16948 |
| 14 | 61518 |
| 15 | 238060 |
| 16 | 999268 |
| 17 | 4315386 |
[1,2,4,8,16,32,64,130,278,654,1728,5196,16948, 61518,238060,999268,4315386] |