n | a(n) |
---|---|
12 | 1 |
13 | 78 |
14 | 3486 |
15 | 117480 |
16 | 3321960 |
17 | 83291670 |
18 | 1913554188 |
19 | 41146859952 |
20 | 840261910995 |
21 | 16466440817750 |
22 | 312058705015200 |
23 | 5752562036128128 |
24 | 103619293824707388 |
25 | 1830311583210984300 |
26 | 31794836537065001400 |
[1,78,3486,117480,3321960,83291670,1913554188, 41146859952,840261910995,16466440817750, 312058705015200,5752562036128128, 103619293824707388,1830311583210984300, 31794836537065001400] |