n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 232 |
8 | 763 |
9 | 2611 |
10 | 9415 |
11 | 35135 |
12 | 136335 |
13 | 544623 |
14 | 2242618 |
15 | 9463508 |
16 | 40917803 |
17 | 180620411 |
18 | 813405580 |
19 | 3728248990 |
20 | 17377551032 |
21 | 82232982872 |
22 | 394742985974 |
23 | 1919885633178 |
24 | 9453682648281 |
25 | 47086636037601 |
26 | 237071351741426 |
27 | 1205689994416252 |
[1,1,2,4,10,26,76,232,763,2611,9415,35135,136335, 544623,2242618,9463508,40917803,180620411, 813405580,3728248990,17377551032,82232982872, 394742985974,1919885633178,9453682648281, 47086636037601,237071351741426,1205689994416252] |