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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 9 |
| 4 | 18 |
| 5 | 38 |
| 6 | 81 |
| 7 | 168 |
| 8 | 350 |
| 9 | 729 |
| 10 | 1516 |
| 11 | 3154 |
| 12 | 6561 |
| 13 | 13647 |
| 14 | 28387 |
| 15 | 59049 |
| 16 | 122826 |
| 17 | 255490 |
| 18 | 531441 |
| 19 | 1105441 |
| 20 | 2299411 |
| 21 | 4782969 |
| 22 | 9948976 |
| 23 | 20694704 |
| 24 | 43046721 |
| 25 | 89540787 |
| 26 | 186252344 |
| 27 | 387420489 |
| 28 | 805867091 |
| 29 | 1676271101 |
| 30 | 3486784401 |
| 31 | 7252803826 |
| 32 | 15086439912 |
[1,2,4,9,18,38,81,168,350,729,1516,3154,6561, 13647,28387,59049,122826,255490,531441,1105441, 2299411,4782969,9948976,20694704,43046721, 89540787,186252344,387420489,805867091,1676271101, 3486784401,7252803826,15086439912] |