n | a(n) |
---|---|
4 | 1 |
5 | 25 |
6 | 435 |
7 | 6545 |
8 | 91390 |
9 | 1221759 |
10 | 15890700 |
11 | 202927725 |
12 | 2558620845 |
13 | 31966749880 |
14 | 396704524216 |
15 | 4898229264825 |
16 | 60246643120300 |
17 | 738799683460650 |
18 | 9038619861406740 |
19 | 110375347398090219 |
20 | 1345860629046814650 |
[1,25,435,6545,91390,1221759,15890700,202927725, 2558620845,31966749880,396704524216,4898229264825, 60246643120300,738799683460650,9038619861406740, 110375347398090219,1345860629046814650] |