n | a(n) |
---|---|
3 | 1 |
4 | 400 |
5 | 140050 |
6 | 48177200 |
7 | 16531644851 |
8 | 5670690600800 |
9 | 1945063360640100 |
10 | 667157540444234400 |
11 | 228835075951868449701 |
12 | 78490432990886231801200 |
13 | 26922218610904350161500150 |
14 | 9234320988196680367732171600 |
[1,400,140050,48177200,16531644851,5670690600800, 1945063360640100,667157540444234400, 228835075951868449701,78490432990886231801200, 26922218610904350161500150, 9234320988196680367732171600] |