n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 30 |
4 | 152 |
5 | 878 |
6 | 5653 |
7 | 39952 |
8 | 306419 |
9 | 2527984 |
10 | 22277080 |
11 | 208483014 |
12 | 2062199125 |
13 | 21472152822 |
14 | 234526948183 |
15 | 2678973711602 |
16 | 31919113081724 |
17 | 395750219427590 |
18 | 5095324584255641 |
19 | 67996852799627404 |
20 | 938939425151949211 |
21 | 13395286474394627364 |
22 | 197162835188949226772 |
[1,2,7,30,152,878,5653,39952,306419,2527984, 22277080,208483014,2062199125,21472152822, 234526948183,2678973711602,31919113081724, 395750219427590,5095324584255641, 67996852799627404,938939425151949211, 13395286474394627364,197162835188949226772] |