login

A002969 as a simple table

na(n)
01
11
20
3-7
4-24
561
61200
74493
8-48384
9-781319
10-1804800
1185444193
121210361856
13-1847527499
14-288162201600
15-3428482320907
1633720680349696
171637781983297521
1814158399925452800
19-431041350297034807
20-14236987086964260864

[1,1,0,-7,-24,61,1200,4493,-48384,-781319,
 -1804800,85444193,1210361856,-1847527499,
 -288162201600,-3428482320907,33720680349696,
 1637781983297521,14158399925452800,
 -431041350297034807,-14236987086964260864]