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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 257 |
| 3 | 5149 |
| 4 | 107047 |
| 5 | 2245709 |
| 6 | 46996227 |
| 7 | 983668985 |
| 8 | 20589521605 |
| 9 | 430963205159 |
| 10 | 9020580137409 |
| 11 | 188811629568963 |
| 12 | 3952055258851259 |
| 13 | 82721285963402783 |
| 14 | 1731456343499743925 |
| 15 | 36241470799292200815 |
| 16 | 758577720207653990475 |
[7,257,5149,107047,2245709,46996227,983668985, 20589521605,430963205159,9020580137409, 188811629568963,3952055258851259, 82721285963402783,1731456343499743925, 36241470799292200815,758577720207653990475] |