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.

A171809 Number of 5 X 5 permutation matrices such that the n-th matrix power is the identity matrix and the determinant is -1.

Table of values

n a(n)
1 0
2 10
3 0
4 30
5 0
6 20

List of values

[0, 10, 0, 30, 0, 20]