n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 42 |
6 | 133 |
7 | 442 |
8 | 1534 |
9 | 5525 |
10 | 20502 |
11 | 77826 |
12 | 300357 |
13 | 1172770 |
14 | 4616054 |
15 | 18267797 |
16 | 72556958 |
17 | 288881562 |
18 | 1152001669 |
19 | 4598779210 |
20 | 18370959022 |
21 | 73420590101 |
22 | 293516780262 |
23 | 1173633626610 |
24 | 4693399603269 |
25 | 18770627198002 |
26 | 75074730049958 |
27 | 300278555188757 |
[1,1,2,5,14,42,133,442,1534,5525,20502,77826, 300357,1172770,4616054,18267797,72556958, 288881562,1152001669,4598779210,18370959022, 73420590101,293516780262,1173633626610, 4693399603269,18770627198002,75074730049958, 300278555188757] |