n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 25 |
5 | 85 |
6 | 291 |
7 | 1072 |
8 | 3949 |
9 | 15143 |
10 | 58563 |
11 | 231111 |
12 | 922494 |
13 | 3724920 |
14 | 15196256 |
15 | 62498021 |
16 | 259151683 |
17 | 1081560013 |
18 | 4542825176 |
19 | 19184568461 |
20 | 81432735810 |
21 | 347241072470 |
22 | 1486943756676 |
23 | 6392073797253 |
24 | 27576360268882 |
25 | 119363438165113 |
26 | 518246264053763 |
27 | 2256543142841418 |
28 | 9851632109402192 |
[1,1,3,8,25,85,291,1072,3949,15143,58563,231111, 922494,3724920,15196256,62498021,259151683, 1081560013,4542825176,19184568461,81432735810, 347241072470,1486943756676,6392073797253, 27576360268882,119363438165113,518246264053763, 2256543142841418,9851632109402192] |