login

A176231 as a simple table

na(n)
01
1-1
21
33
4-6
51
6-15
745
8-15
91
10105
11-420
12210
13-28
141
15-945
164725
17-3150
18630
19-45
201
2110395
22-62370
2351975
24-13860
251485
26-66
271
28-135135
29945945
30-945945
31315315
32-45045
333003
34-91
351
362027025
37-16216200
3818918900
39-7567560
401351350
41-120120
425460
43-120
441

[1,-1,1,3,-6,1,-15,45,-15,1,105,-420,210,-28,1,
 -945,4725,-3150,630,-45,1,10395,-62370,51975,
 -13860,1485,-66,1,-135135,945945,-945945,315315,
 -45045,3003,-91,1,2027025,-16216200,18918900,
 -7567560,1351350,-120120,5460,-120,1]