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.

A208346 Number of n X n 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors).

Table of values

n a(n)
1 1
2 15
3 1095
4 230387
5 191586797
6 647640659639

List of values

[1, 15, 1095, 230387, 191586797, 647640659639]

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

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