A118712 - cp's OEIS frontend

A118712 a(n) = Determinant of n X n circulant matrix whose first row is A000001(1), A000001(2), ..., A000001(n) where A000001(n) = number of groups of order n.

n	a(n)
1	1
2	0
3	0
4	-5
5	6
6	-16
7	9
8	-134400
9	647248
10	-1711908
11	6076067
12	-85248000
13	116477425
14	-1764364437
15	909276004
16	-522319050599375232
17	14313181351994538493
18	-165893335414907083200
19	2939566160282258664451
20	-5007637771411479278976
21	75399747694572065660672

[1, 0, 0, -5, 6, -16, 9, -134400, 647248, -1711908, 6076067, -85248000, 116477425, -1764364437, 909276004, -522319050599375232, 14313181351994538493, -165893335414907083200, 2939566160282258664451, -5007637771411479278976, 75399747694572065660672]

cp's OEIS Frontend

A118712 a(n) = Determinant of n X n circulant matrix whose first row is A000001(1), A000001(2), ..., A000001(n) where A000001(n) = number of groups of order n.

Table of values

List of values