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.

A222768 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

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%I A222768 #6 Jul 23 2025 03:02:33
%S A222768 5,152,2446,89811,1570588,62017670,1139211468,46316300783,
%T A222768 872037778022,36016907441620,687733392122744,28680675666813436,
%U A222768 552611942013475560,23197864298620002960,449800925803708450740,18972874575715876051106
%N A222768 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
%C A222768 Column 7 of A222769
%H A222768 R. H. Hardin, <a href="/A222768/b222768.txt">Table of n, a(n) for n = 1..105</a>
%e A222768 Some solutions for n=3
%e A222768 ..0..0..0..1..0..1..1....0..0..0..1..1..1..0....0..0..1..1..1..0..0
%e A222768 ..0..0..0..0..1..0..0....1..1..1..1..1..1..1....0..0..1..0..0..0..0
%e A222768 ..0..0..0..0..0..0..0....0..1..1..1..1..1..1....0..0..1..0..0..0..0
%K A222768 nonn
%O A222768 1,1
%A A222768 _R. H. Hardin_ Mar 05 2013