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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 31 |
| 2 | 625 |
| 3 | 10435 |
| 4 | 157081 |
| 5 | 2218891 |
| 6 | 30058465 |
| 7 | 395576995 |
| 8 | 5099030761 |
| 9 | 64729573051 |
| 10 | 812287789105 |
| 11 | 10103508011155 |
| 12 | 124806994586041 |
| 13 | 1533359039348011 |
| 14 | 18757216238876545 |
| 15 | 228656612889142915 |
[1,31,625,10435,157081,2218891,30058465,395576995, 5099030761,64729573051,812287789105, 10103508011155,124806994586041,1533359039348011, 18757216238876545,228656612889142915] |