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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 22 |
| 3 | 203 |
| 4 | 1071 |
| 5 | 29354 |
| 6 | 245891 |
| 7 | 14959260 |
| 8 | 14959260 |
| 9 | 146023209 |
| 10 | 1178930480 |
| 11 | 20735515065 |
| 12 | 121559317130 |
| 13 | 4416249685106 |
| 14 | 37826529360487 |
| 15 | 155364605873808 |
| 16 | 2291095531474075 |
| 17 | 27417981382118579 |
| 18 | 154501831890087986 |
| 19 | 2116782166626093033 |
| 20 | 13809261875873749757 |
[1,22,203,1071,29354,245891,14959260,14959260, 146023209,1178930480,20735515065,121559317130, 4416249685106,37826529360487,155364605873808, 2291095531474075,27417981382118579, 154501831890087986,2116782166626093033, 13809261875873749757] |