n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 33 |
4 | 171 |
5 | 1073 |
6 | 7749 |
7 | 58846 |
8 | 489993 |
9 | 4345078 |
10 | 40693236 |
11 | 403876159 |
12 | 4192624215 |
13 | 45577188311 |
14 | 516108618746 |
15 | 6073914844170 |
16 | 74083651509143 |
17 | 934440647979907 |
18 | 12164742571864976 |
19 | 163157161537315276 |
[1,2,6,33,171,1073,7749,58846,489993,4345078, 40693236,403876159,4192624215,45577188311, 516108618746,6073914844170,74083651509143, 934440647979907,12164742571864976, 163157161537315276] |