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.

A206860 Number of nX5 0..2 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal.

Table of values

n a(n)
1 191
2 36481
3 3425501
4 314918295
5 31208037240
6 3092914364659
7 303316860005399
8 29725367062521082
9 2918687692387968133
10 286698257332823360369
11 28152247554788869997756
12 2763985738207647315882808

List of values

[191, 36481, 3425501, 314918295, 31208037240, 3092914364659, 303316860005399, 29725367062521082, 2918687692387968133, 286698257332823360369, 28152247554788869997756, 2763985738207647315882808]

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

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