A132962 - cp's OEIS frontend

A132962 a(n) = n!Sum_{d|n} (-1)^(d+1)/(d!(n/d)!^d).

n	a(n)
1	1
2	0
3	2
4	-3
5	2
6	5
7	2
8	-140
9	282
10	819
11	2
12	-20482
13	2
14	133419
15	1527528
16	-4661085
17	2
18	-153296429
19	2
20	1402482796
21	36278688162
22	13748957859
23	2
24	-14081800718427
25	5194672859378
26	7905848380325
27	2977584150505252
28	12956452725792600
29	2
30	-1314647260913859151

[1, 0, 2, -3, 2, 5, 2, -140, 282, 819, 2, -20482, 2, 133419, 1527528, -4661085, 2, -153296429, 2, 1402482796, 36278688162, 13748957859, 2, -14081800718427, 5194672859378, 7905848380325, 2977584150505252, 12956452725792600, 2, -1314647260913859151]

cp's OEIS Frontend

A132962 a(n) = n!Sum_{d|n} (-1)^(d+1)/(d!(n/d)!^d).

Table of values

List of values

cp's OEIS Frontend

A132962 a(n) = n!*Sum_{d|n} (-1)^(d+1)/(d!*(n/d)!^d).

Table of values

List of values

A132962 a(n) = n!Sum_{d|n} (-1)^(d+1)/(d!(n/d)!^d).