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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 199 |
| 4 | 21883 |
| 5 | 8916991 |
| 6 | 13027669147 |
| 7 | 66525761289919 |
| 8 | 1164200761777844203 |
| 9 | 68750129286493392353311 |
| 10 | 13532431689375421261723713787 |
| 11 | 8789916574829303798007959322784639 |
| 12 | 18685340957126032386127459367999667264523 |
[1,1,7,199,21883,8916991,13027669147, 66525761289919,1164200761777844203, 68750129286493392353311, 13532431689375421261723713787, 8789916574829303798007959322784639, 18685340957126032386127459367999667264523] |