n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 11 |
5 | 31 |
6 | 171 |
7 | 719 |
8 | 5907 |
9 | 40576 |
10 | 574191 |
11 | 6118805 |
12 | 134458817 |
13 | 2328856652 |
14 | 81657178991 |
15 | 2239533631682 |
16 | 126154274091928 |
17 | 5530047112752039 |
18 | 494646201440552586 |
19 | 34629959352847199652 |
20 | 4953721399562434015229 |
[1,2,3,11,31,171,719,5907,40576,574191,6118805, 134458817,2328856652,81657178991,2239533631682, 126154274091928,5530047112752039, 494646201440552586,34629959352847199652, 4953721399562434015229] |