n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 38 |
5 | 127 |
6 | 493 |
7 | 1849 |
8 | 7444 |
9 | 29523 |
10 | 122641 |
11 | 503166 |
12 | 2139489 |
13 | 8990962 |
14 | 38889133 |
15 | 166435151 |
16 | 729268850 |
17 | 3166004539 |
18 | 14014630572 |
19 | 61540779798 |
20 | 274683353115 |
21 | 1217425797984 |
22 | 5471448336914 |
23 | 24436690566099 |
24 | 110465215458605 |
25 | 496547674115096 |
26 | 2255792311485189 |
27 | 10195606252477070 |
[1,1,4,10,38,127,493,1849,7444,29523,122641, 503166,2139489,8990962,38889133,166435151, 729268850,3166004539,14014630572,61540779798, 274683353115,1217425797984,5471448336914, 24436690566099,110465215458605,496547674115096, 2255792311485189,10195606252477070] |