A085340 - cp's OEIS frontend

A085340 a(n) is the value of determinant of the following special matrix: diagonal values equal to n-2; upper triangular entries equal to -1; lower triangular values are +1.

n	a(n)
1	-1
2	1
3	4
4	41
5	528
6	8177
7	148160
8	3077713
9	72147712
10	1884629825
11	54294967296
12	1710428956601
13	58496602689536
14	2158563109641265
15	85487558566199296
16	3616912482448035233
17	162819625954342010880
18	7770488166051562690817
19	391896604540625999888384

[-1, 1, 4, 41, 528, 8177, 148160, 3077713, 72147712, 1884629825, 54294967296, 1710428956601, 58496602689536, 2158563109641265, 85487558566199296, 3616912482448035233, 162819625954342010880, 7770488166051562690817, 391896604540625999888384]

cp's OEIS Frontend

A085340 a(n) is the value of determinant of the following special matrix: diagonal values equal to n-2; upper triangular entries equal to -1; lower triangular values are +1.

Table of values

List of values