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.

A213985 Number of n X n 0..3 matrices whose square is also a 0..3 matrix.

Table of values

n	a(n)
1	2
2	36
3	2546
4	604639
5	421195466
6	801373175814

List of values

[2, 36, 2546, 604639, 421195466, 801373175814]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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