n | a(n) |
---|---|
2 | 1 |
3 | 2 |
4 | 5 |
5 | 14 |
6 | 40 |
7 | 116 |
8 | 341 |
9 | 1014 |
10 | 3045 |
11 | 9222 |
12 | 28137 |
13 | 86408 |
14 | 266887 |
15 | 828560 |
16 | 2584111 |
17 | 8092646 |
18 | 25438494 |
19 | 80235386 |
20 | 253854855 |
21 | 805447478 |
22 | 2562252423 |
23 | 8170557076 |
24 | 26112495767 |
25 | 83626191936 |
26 | 268331079046 |
27 | 862537758650 |
28 | 2777237155053 |
29 | 8956318767652 |
30 | 28925845302365 |
[1,2,5,14,40,116,341,1014,3045,9222,28137,86408, 266887,828560,2584111,8092646,25438494,80235386, 253854855,805447478,2562252423,8170557076, 26112495767,83626191936,268331079046,862537758650, 2777237155053,8956318767652,28925845302365] |