n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 30 |
3 | 205 |
4 | 1505 |
5 | 11430 |
6 | 88105 |
7 | 683405 |
8 | 5314830 |
9 | 41378005 |
10 | 322287305 |
11 | 2510710230 |
12 | 19560629905 |
13 | 152399173205 |
14 | 1187375157630 |
15 | 9251147403805 |
16 | 72078242501105 |
17 | 561581982417030 |
18 | 4375445744059705 |
19 | 34090353624231005 |
[1,5,30,205,1505,11430,88105,683405,5314830, 41378005,322287305,2510710230,19560629905, 152399173205,1187375157630,9251147403805, 72078242501105,561581982417030,4375445744059705, 34090353624231005] |