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.

A205160 Number of n X 7 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..3 introduced in row major order.

This page as a plain text file.
%I A205160 #7 Jun 06 2018 15:19:16
%S A205160 528,6427791,35987024999,231638725420288,1458877292453477918,
%T A205160 9223088985799640757493
%N A205160 Number of n X 7 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..3 introduced in row major order.
%e A205160 Some solutions for n=5
%e A205160 ..0..0..1..2..3..3..2....0..1..1..0..0..2..3....0..0..1..1..0..1..2
%e A205160 ..3..0..0..1..2..3..2....3..0..0..2..1..3..2....1..1..0..0..1..0..3
%e A205160 ..2..1..2..1..0..1..0....0..1..1..2..0..1..2....2..1..1..2..0..3..1
%e A205160 ..1..3..2..2..3..0..3....1..3..0..0..1..3..3....3..0..2..0..1..3..2
%e A205160 ..1..0..3..1..0..3..3....2..0..2..2..1..1..0....3..1..3..2..2..1..1
%Y A205160 Column 7 of A205161.
%K A205160 nonn
%O A205160 1,1
%A A205160 _R. H. Hardin_, Jan 22 2012

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

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