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.

A209520 Number of n X n 0..7 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..7 introduced in row major order.

Table of values

n a(n)
1 1
2 6
3 2027
4 27323948
5 16484968944748
6 258381047085271692456

List of values

[1, 6, 2027, 27323948, 16484968944748, 258381047085271692456]

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

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