n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 11 |
3 | 70 |
4 | 487 |
5 | 3592 |
6 | 27600 |
7 | 218566 |
8 | 1771367 |
9 | 14621410 |
10 | 122495659 |
11 | 1038934480 |
12 | 8903129300 |
13 | 76970244560 |
14 | 670507216168 |
15 | 5879770542870 |
16 | 51861650744071 |
17 | 459804626981158 |
18 | 4095433894576785 |
19 | 36628711884398086 |
20 | 328824295880947471 |
[1,2,11,70,487,3592,27600,218566,1771367,14621410, 122495659,1038934480,8903129300,76970244560, 670507216168,5879770542870,51861650744071, 459804626981158,4095433894576785, 36628711884398086,328824295880947471] |