n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 38 |
5 | 271 |
6 | 2342 |
7 | 23647 |
8 | 272918 |
9 | 3543631 |
10 | 51123782 |
11 | 811316287 |
12 | 14045783798 |
13 | 263429174191 |
14 | 5320671485222 |
15 | 115141595488927 |
16 | 2657827340990678 |
17 | 65185383514567951 |
18 | 1692767331628422662 |
19 | 46400793659664205567 |
20 | 1338843898122192101558 |
21 | 40562412499252036940911 |
[1,1,2,7,38,271,2342,23647,272918,3543631, 51123782,811316287,14045783798,263429174191, 5320671485222,115141595488927,2657827340990678, 65185383514567951,1692767331628422662, 46400793659664205567,1338843898122192101558, 40562412499252036940911] |