n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 36 |
6 | 123 |
7 | 422 |
8 | 1556 |
9 | 5797 |
10 | 22512 |
11 | 88244 |
12 | 355082 |
13 | 1441038 |
14 | 5951551 |
15 | 24763384 |
16 | 104316842 |
17 | 442258945 |
18 | 1892124241 |
19 | 8139630740 |
20 | 35259782511 |
21 | 153461173363 |
22 | 671582239139 |
23 | 2950933397118 |
24 | 13024116086453 |
25 | 57684461929497 |
26 | 256428223442345 |
27 | 1143394392156529 |
28 | 5114133402269907 |
[1,1,2,4,12,36,123,422,1556,5797,22512,88244, 355082,1441038,5951551,24763384,104316842, 442258945,1892124241,8139630740,35259782511, 153461173363,671582239139,2950933397118, 13024116086453,57684461929497,256428223442345, 1143394392156529,5114133402269907] |