n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 8 |
6 | 20 |
7 | 55 |
8 | 159 |
9 | 464 |
10 | 1383 |
11 | 4200 |
12 | 12910 |
13 | 40112 |
14 | 125832 |
15 | 397888 |
16 | 1266848 |
17 | 4058263 |
18 | 13070453 |
19 | 42297553 |
20 | 137467673 |
21 | 448499679 |
22 | 1468388784 |
23 | 4822816903 |
24 | 15886282268 |
25 | 52468807845 |
26 | 173718343364 |
27 | 576466929104 |
28 | 1916968549390 |
29 | 6387086400663 |
30 | 21319636605919 |
31 | 71284279000874 |
32 | 238724756808108 |
33 | 800659887614429 |
34 | 2689098091847122 |
[1,1,1,3,8,20,55,159,464,1383,4200,12910,40112, 125832,397888,1266848,4058263,13070453,42297553, 137467673,448499679,1468388784,4822816903, 15886282268,52468807845,173718343364,576466929104, 1916968549390,6387086400663,21319636605919, 71284279000874,238724756808108,800659887614429, 2689098091847122] |