n | a(n) |
---|---|
0 | 1 |
1 | 27 |
2 | 338 |
3 | 2835 |
4 | 18566 |
5 | 101955 |
6 | 490253 |
7 | 2121679 |
8 | 8424520 |
9 | 31120519 |
10 | 108082568 |
11 | 355805845 |
12 | 1117485621 |
13 | 3366123200 |
14 | 9767105406 |
15 | 27398618368 |
16 | 74534264393 |
17 | 197147918679 |
18 | 508189847045 |
19 | 1279140518117 |
20 | 3149375120229 |
21 | 7596463993261 |
[1,27,338,2835,18566,101955,490253,2121679, 8424520,31120519,108082568,355805845,1117485621, 3366123200,9767105406,27398618368,74534264393, 197147918679,508189847045,1279140518117, 3149375120229,7596463993261] |