n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 172 |
4 | 342 |
5 | 26556 |
6 | 67220 |
7 | 4875160 |
8 | 14125030 |
9 | 973837420 |
10 | 3087573628 |
11 | 204536051176 |
12 | 692771715836 |
13 | 44412235657176 |
14 | 158358513025896 |
15 | 9874709152875568 |
16 | 36706645561910150 |
17 | 2234840966950941260 |
18 | 8601116786415880940 |
19 | 512801585354912006600 |
20 | 2032977466125710169236 |
[1,2,2,172,342,26556,67220,4875160,14125030, 973837420,3087573628,204536051176,692771715836, 44412235657176,158358513025896,9874709152875568, 36706645561910150,2234840966950941260, 8601116786415880940,512801585354912006600, 2032977466125710169236] |