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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 8 |
| 5 | 25 |
| 6 | 88 |
| 7 | 343 |
| 8 | 1448 |
| 9 | 6561 |
| 10 | 31622 |
| 11 | 161051 |
| 12 | 861979 |
| 13 | 4826809 |
| 14 | 28172943 |
| 15 | 170859375 |
| 16 | 1073741824 |
| 17 | 6975757441 |
| 18 | 46753733110 |
| 19 | 322687697779 |
| 20 | 2289733608959 |
| 21 | 16679880978201 |
| 22 | 124577080440588 |
| 23 | 952809757913927 |
| 24 | 7454684703958210 |
[1,1,3,8,25,88,343,1448,6561,31622,161051,861979, 4826809,28172943,170859375,1073741824,6975757441, 46753733110,322687697779,2289733608959, 16679880978201,124577080440588,952809757913927, 7454684703958210] |