n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 40 |
5 | 131 |
6 | 543 |
7 | 1995 |
8 | 8492 |
9 | 33265 |
10 | 144245 |
11 | 588503 |
12 | 2586676 |
13 | 10852579 |
14 | 48195518 |
15 | 206354186 |
16 | 923882538 |
17 | 4016849256 |
18 | 18102778754 |
19 | 79653690932 |
20 | 360933654486 |
21 | 1603372701367 |
22 | 7298673862103 |
23 | 32676073002920 |
24 | 149326831866216 |
25 | 672858765696468 |
26 | 3085329699710324 |
27 | 13977902597587443 |
[1,1,4,10,40,131,543,1995,8492,33265,144245, 588503,2586676,10852579,48195518,206354186, 923882538,4016849256,18102778754,79653690932, 360933654486,1603372701367,7298673862103, 32676073002920,149326831866216,672858765696468, 3085329699710324,13977902597587443] |