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.

A229371 Number of nX7 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.

This page as a plain text file.
%I A229371 #6 Jul 23 2025 05:41:23
%S A229371 1224,93589,9346997,911301584,89084628843,8710922742428,
%T A229371 851668326534130,83250606242790579,8145575543947646167,
%U A229371 796251832574767236498,77900125870506075981681,7616537920070292008035552
%N A229371 Number of nX7 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.
%C A229371 Column 7 of A229372
%H A229371 R. H. Hardin, <a href="/A229371/b229371.txt">Table of n, a(n) for n = 1..220</a>
%e A229371 Some solutions for n=3
%e A229371 ..0..0..0..0..2..2..1....0..0..0..1..0..1..0....0..0..0..1..0..0..1
%e A229371 ..1..2..2..2..0..0..0....1..2..1..2..0..2..2....1..2..1..2..1..0..0
%e A229371 ..2..0..0..1..2..1..2....0..0..2..1..2..1..0....0..0..0..0..1..2..1
%K A229371 nonn
%O A229371 1,1
%A A229371 _R. H. Hardin_ Sep 21 2013

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

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