n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 781 |
3 | 31529 |
4 | 1292697 |
5 | 53175517 |
6 | 2188978117 |
7 | 90124167441 |
8 | 3710708201969 |
9 | 152783289861989 |
10 | 6290652543875133 |
11 | 259009513044645817 |
12 | 10664383939345916681 |
13 | 439092316687230373293 |
14 | 18079062471131097321077 |
[1,21,781,31529,1292697,53175517,2188978117, 90124167441,3710708201969,152783289861989, 6290652543875133,259009513044645817, 10664383939345916681,439092316687230373293, 18079062471131097321077] |