n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 26 |
4 | 152 |
5 | 1132 |
6 | 10300 |
7 | 111064 |
8 | 1387104 |
9 | 19713104 |
10 | 314350064 |
11 | 5560881328 |
12 | 108110428288 |
13 | 2291750937088 |
14 | 52618613073408 |
15 | 1301031907140608 |
16 | 34470409922547200 |
17 | 974354631630161152 |
18 | 29270099764874881792 |
19 | 931275451933870415104 |
20 | 31285710787985504633856 |
[1,2,6,26,152,1132,10300,111064,1387104,19713104, 314350064,5560881328,108110428288,2291750937088, 52618613073408,1301031907140608,34470409922547200, 974354631630161152,29270099764874881792, 931275451933870415104,31285710787985504633856] |