cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A384595 a(n) = neg(M(n)), where M(n) is the n X n circulant matrix with (row 1) = (F(2), F(3), ..., F(n+1)), where F = A000045 (Fibonacci numbers), and neg(M(n)) is the negative part of the determinant of M(n); see A380661.

Table of values

n a(n)
1 0
2 -4
3 -18
4 -1059
5 -51115
6 -14122480
7 -5176201331
8 -8184762199782
9 -21582120875577408
10 -211126151053299550639
11 -3968236858233834575013603
12 -250193703665647266489840668160
13 -33362066597786815040358189976876663
14 -13879811335315653909400110618024123820786

List of values

[0, -4, -18, -1059, -51115, -14122480, -5176201331, -8184762199782, -21582120875577408, -211126151053299550639, -3968236858233834575013603, -250193703665647266489840668160, -33362066597786815040358189976876663, -13879811335315653909400110618024123820786]