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.

A261815 Total number of semimagic squares of order n that can be formed from the numbers 1, ..., n^2.

Table of values

n a(n)
1 1
2 0
3 72
4 549504
5 4632344409600

List of values

[1, 0, 72, 549504, 4632344409600]