A384075 - cp's OEIS frontend

A384075 a(n) = neg(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1,3,5,7, ..., 2n - 1), and neg(M(n)) is the negative part of the determinant of M(n); see A380661.

n	a(n)
1	0
2	-9
3	-45
4	-4716
5	-200200
6	-20916552
7	-2462535768
8	-406262340288
9	-84096850828032
10	-21708790967664000
11	-6808563893605222144
12	-2552145158372103507456
13	-1126589571631974396251136
14	-578462264691449080954733568
15	-341831891354409385226121600000

[0, -9, -45, -4716, -200200, -20916552, -2462535768, -406262340288, -84096850828032, -21708790967664000, -6808563893605222144, -2552145158372103507456, -1126589571631974396251136, -578462264691449080954733568, -341831891354409385226121600000]

cp's OEIS Frontend

A384075 a(n) = neg(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1,3,5,7, ..., 2n - 1), and neg(M(n)) is the negative part of the determinant of M(n); see A380661.

Table of values

List of values