n | a(n) |
---|---|
0 | 0 |
1 | 5 |
2 | 30 |
3 | 155 |
4 | 780 |
5 | 3905 |
6 | 19530 |
7 | 97655 |
8 | 488280 |
9 | 2441405 |
10 | 12207030 |
11 | 61035155 |
12 | 305175780 |
13 | 1525878905 |
14 | 7629394530 |
15 | 38146972655 |
16 | 190734863280 |
17 | 953674316405 |
18 | 4768371582030 |
19 | 23841857910155 |
20 | 119209289550780 |
21 | 596046447753905 |
22 | 2980232238769530 |
23 | 14901161193847655 |
[0,5,30,155,780,3905,19530,97655,488280,2441405, 12207030,61035155,305175780,1525878905,7629394530, 38146972655,190734863280,953674316405, 4768371582030,23841857910155,119209289550780, 596046447753905,2980232238769530, 14901161193847655] |