n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 42 |
4 | 768 |
5 | 20680 |
6 | 749040 |
7 | 34497792 |
8 | 1944626432 |
9 | 130528288512 |
10 | 10219233265920 |
11 | 918320724657600 |
12 | 93509880099305472 |
13 | 10677268138244018688 |
14 | 1355273477576934150144 |
15 | 189834913883100796531200 |
[1,4,42,768,20680,749040,34497792,1944626432, 130528288512,10219233265920,918320724657600, 93509880099305472,10677268138244018688, 1355273477576934150144,189834913883100796531200] |