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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 17 |
| 3 | 36 |
| 4 | 1601 |
| 5 | 3238 |
| 6 | 27505 |
| 7 | 58248 |
| 8 | 2590417 |
| 9 | 5239082 |
| 10 | 44503073 |
| 11 | 94245228 |
| 12 | 4191293105 |
| 13 | 8476831438 |
| 14 | 72005944609 |
| 15 | 152488720656 |
| 16 | 6781509653473 |
| 17 | 13715508027602 |
| 18 | 116505573874289 |
| 19 | 246726655776180 |
| 20 | 10972478428026209 |
| 21 | 22191683511828598 |
| 22 | 188505946522654993 |
[1,2,17,36,1601,3238,27505,58248,2590417,5239082, 44503073,94245228,4191293105,8476831438, 72005944609,152488720656,6781509653473, 13715508027602,116505573874289,246726655776180, 10972478428026209,22191683511828598, 188505946522654993] |