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.

A204684 Number of nX7 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order.

Table of values

n a(n)
1 528
2 6427791
3 24932875448
4 115180678788869
5 517329649988490420

List of values

[528, 6427791, 24932875448, 115180678788869, 517329649988490420]

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

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