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.

A223055 Number of n X n 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.

Table of values

n a(n)
1 1
2 10
3 4865
4 31331820
5 2266567594841
6 1837966217755803448
7 16700483735732492103987445
8 1700203937054371815103811136350852

List of values

[1, 10, 4865, 31331820, 2266567594841, 1837966217755803448, 16700483735732492103987445, 1700203937054371815103811136350852]

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

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