n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 6 |
6 | 19 |
7 | 60 |
8 | 193 |
9 | 636 |
10 | 2141 |
11 | 7331 |
12 | 25451 |
13 | 89385 |
14 | 317036 |
15 | 1134100 |
16 | 4087104 |
17 | 14825482 |
18 | 54088470 |
19 | 198348985 |
20 | 730723956 |
21 | 2703194553 |
22 | 10037648254 |
23 | 37399878530 |
24 | 139785998185 |
25 | 523962161491 |
26 | 1969154471389 |
27 | 7418488063284 |
28 | 28010998254007 |
29 | 105986233046356 |
30 | 401804972780552 |
[1,1,1,2,6,19,60,193,636,2141,7331,25451,89385, 317036,1134100,4087104,14825482,54088470, 198348985,730723956,2703194553,10037648254, 37399878530,139785998185,523962161491, 1969154471389,7418488063284,28010998254007, 105986233046356,401804972780552] |