n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 399 |
3 | 7401 |
4 | 136227 |
5 | 2500437 |
6 | 45845895 |
7 | 840237393 |
8 | 15396839067 |
9 | 282119272221 |
10 | 5169192919455 |
11 | 94712719519353 |
12 | 1735370171447763 |
13 | 31796203000166949 |
14 | 582583421696631159 |
15 | 10674336158022192609 |
16 | 195579614965832408523 |
17 | 3583490696858688375405 |
[1,21,399,7401,136227,2500437,45845895,840237393, 15396839067,282119272221,5169192919455, 94712719519353,1735370171447763,31796203000166949, 582583421696631159,10674336158022192609, 195579614965832408523,3583490696858688375405] |