A384076 - cp's OEIS frontend

A384076 a(n) = pos(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1,3,5,7, ..., 2n - 1), and pos(M(n)) is the positive part of the determinant of M(n); see A380661.

n	a(n)
1	1
2	1
3	153
4	2668
5	250200
6	19423560
7	2515242520
8	404114856640
9	84196030473216
10	21703670967664000
11	6808856052755927808
12	2552126898198385479168
13	1126590812208410998119424
14	578462173661889165983466496
15	341831898528862885226121600000

[1, 1, 153, 2668, 250200, 19423560, 2515242520, 404114856640, 84196030473216, 21703670967664000, 6808856052755927808, 2552126898198385479168, 1126590812208410998119424, 578462173661889165983466496, 341831898528862885226121600000]

cp's OEIS Frontend

A384076 a(n) = pos(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1,3,5,7, ..., 2n - 1), and pos(M(n)) is the positive part of the determinant of M(n); see A380661.

Table of values

List of values