n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 5 |
3 | 45 |
4 | 245 |
5 | 1305 |
6 | 6605 |
7 | 33405 |
8 | 167405 |
9 | 838845 |
10 | 4196045 |
11 | 20989245 |
12 | 104955245 |
13 | 524820945 |
14 | 2624149445 |
15 | 13120970445 |
16 | 65605075445 |
17 | 328026491505 |
18 | 1640133571805 |
19 | 8200673428605 |
20 | 41003372712605 |
21 | 205016891401905 |
22 | 1025084484848405 |
23 | 5125422563427405 |
[0,0,5,45,245,1305,6605,33405,167405,838845, 4196045,20989245,104955245,524820945,2624149445, 13120970445,65605075445,328026491505, 1640133571805,8200673428605,41003372712605, 205016891401905,1025084484848405,5125422563427405] |