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.

A207003 Number of 6Xn 0..1 arrays avoiding 0 1 0 horizontally and 0 1 1 vertically.

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%I A207003 #7 Jul 22 2025 19:55:53
%S A207003 33,1089,16109,211471,3032756,45723467,683241763,10070110597,
%T A207003 148233534913,2188626118244,32347115051263,477836040550545,
%U A207003 7056110017685369,104200645149581597,1538926599002070335
%N A207003 Number of 6Xn 0..1 arrays avoiding 0 1 0 horizontally and 0 1 1 vertically.
%C A207003 Row 6 of A207000
%H A207003 R. H. Hardin, <a href="/A207003/b207003.txt">Table of n, a(n) for n = 1..210</a>
%e A207003 Some solutions for n=4
%e A207003 ..0..0..1..1....1..1..0..0....0..0..0..0....1..1..1..1....1..0..1..1
%e A207003 ..0..0..1..1....0..1..1..1....1..1..0..0....1..1..1..1....0..0..0..0
%e A207003 ..0..0..1..1....1..1..0..0....0..0..0..1....1..1..1..1....1..0..1..1
%e A207003 ..1..1..0..1....0..1..1..1....0..1..1..0....1..1..1..0....0..0..0..0
%e A207003 ..0..0..1..1....1..0..0..0....1..0..0..0....1..0..1..1....1..0..1..1
%e A207003 ..1..0..0..0....0..1..1..0....0..0..0..0....1..1..0..0....0..0..0..0
%K A207003 nonn
%O A207003 1,1
%A A207003 _R. H. Hardin_ Feb 14 2012