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.

A195217 Number of lower triangles of an n X n integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by 5 or less and triangles differing by a constant counted only once.

Table of values

n a(n)
1 1
2 91
3 51205
4 189677411
5 4677360495205
6 774355028021195459
7 863969905606597340602967
8 6512935591253221256126051469607

List of values

[1, 91, 51205, 189677411, 4677360495205, 774355028021195459, 863969905606597340602967, 6512935591253221256126051469607]

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

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