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.

A195274 Number of lower triangles of an n X n integer array with each element differing from all of its vertical and horizontal neighbors by 4 or less and triangles differing by a constant counted only once.

Table of values

n a(n)
1 1
2 81
3 39609
4 119743353
5 2266745635377
6 270149651796118149
7 203368493873412168605037
8 969036564714736790447759054277

List of values

[1, 81, 39609, 119743353, 2266745635377, 270149651796118149, 203368493873412168605037, 969036564714736790447759054277]

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

Content is available under The OEIS End-User License Agreement.