n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 35 |
6 | 102 |
7 | 332 |
8 | 1205 |
9 | 4796 |
10 | 20640 |
11 | 95197 |
12 | 467694 |
13 | 2435804 |
14 | 13394117 |
15 | 77490260 |
16 | 470198899 |
17 | 2984034004 |
18 | 19757370537 |
19 | 136171758636 |
20 | 975002124101 |
21 | 7239322944625 |
22 | 55648169854405 |
23 | 442195755123607 |
24 | 3627392029179270 |
25 | 30679238282421267 |
26 | 267215329668444337 |
[1,1,2,5,13,35,102,332,1205,4796,20640,95197, 467694,2435804,13394117,77490260,470198899, 2984034004,19757370537,136171758636,975002124101, 7239322944625,55648169854405,442195755123607, 3627392029179270,30679238282421267, 267215329668444337] |