n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 11 |
3 | 55 |
4 | 380 |
5 | 2319 |
6 | 15171 |
7 | 96139 |
8 | 619773 |
9 | 3962734 |
10 | 25445515 |
11 | 163048957 |
12 | 1045897075 |
13 | 6705473761 |
14 | 43001795070 |
15 | 275730928993 |
16 | 1768128097215 |
17 | 11337760387473 |
18 | 72702310606249 |
19 | 466192677008538 |
20 | 2989403530821497 |
21 | 19169143325987983 |
22 | 122919655766448729 |
[1,1,11,55,380,2319,15171,96139,619773,3962734, 25445515,163048957,1045897075,6705473761, 43001795070,275730928993,1768128097215, 11337760387473,72702310606249,466192677008538, 2989403530821497,19169143325987983, 122919655766448729] |