A383772 - cp's OEIS frontend

A383772 a(n) = neg(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1, 2, ... , n), and neg(M(n)) is the negative part of the determinant of M(n); see A380661.

n	a(n)
1	0
2	-4
3	-18
4	-610
5	-15675
6	-772122
7	-47282844
8	-3918873376
9	-410168886615
10	-53329052728000
11	-8417451284317614
12	-1586200451151892608
13	-351735180091505203539
14	-90667510133054591492224
15	-26884188746929397888775000
16	-9086147134545912835276742656

[0, -4, -18, -610, -15675, -772122, -47282844, -3918873376, -410168886615, -53329052728000, -8417451284317614, -1586200451151892608, -351735180091505203539, -90667510133054591492224, -26884188746929397888775000, -9086147134545912835276742656]

cp's OEIS Frontend

A383772 a(n) = neg(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (1, 2, ... , n), and neg(M(n)) is the negative part of the determinant of M(n); see A380661.

Table of values

List of values