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.

A233242 Number of 4Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

Table of values

n a(n)
1 48
2 6046
3 1409129
4 338046654
5 81477098771
6 19645569858350
7 4737126288340919
8 1142266120892160404
9 275435466571576824843
10 66415959358015599726176
11 16014929880282766959784607
12 3861692004518641314432355642

List of values

[48, 6046, 1409129, 338046654, 81477098771, 19645569858350, 4737126288340919, 1142266120892160404, 275435466571576824843, 66415959358015599726176, 16014929880282766959784607, 3861692004518641314432355642]

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

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