n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 42 |
6 | 133 |
7 | 442 |
8 | 1535 |
9 | 5546 |
10 | 20754 |
11 | 80113 |
12 | 317875 |
13 | 1292648 |
14 | 5374073 |
15 | 22794182 |
16 | 98462847 |
17 | 432498659 |
18 | 1929221610 |
19 | 8728815103 |
20 | 40017844229 |
21 | 185727603829 |
22 | 871897549029 |
23 | 4137132922197 |
24 | 19828476952117 |
25 | 95934298966615 |
26 | 468291607852143 |
27 | 2305162065138433 |
[1,1,2,5,14,42,133,442,1535,5546,20754,80113, 317875,1292648,5374073,22794182,98462847, 432498659,1929221610,8728815103,40017844229, 185727603829,871897549029,4137132922197, 19828476952117,95934298966615,468291607852143, 2305162065138433] |