cp's OEIS Frontend

A222903 Number of nX5 0..3 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

%I A222903 #6 Jul 23 2025 03:14:13
%S A222903 5,92,1202,101398,2117424,213112150,4854855483,488736554328,
%T A222903 11422629770589,1152667562787040,27237086853444410,
%U A222903 2763273074226456813,65679405668506840943,6699091915684382786089,159870883492047139411327
%N A222903 Number of nX5 0..3 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
%C A222903 Column 5 of A222906
%H A222903 R. H. Hardin, <a href="/A222903/b222903.txt">Table of n, a(n) for n = 1..85</a>
%e A222903 Some solutions for n=3
%e A222903 ..0..0..0..0..1....0..1..0..2..0....0..0..0..0..0....0..1..1..1..0
%e A222903 ..0..0..0..0..2....0..0..0..0..0....0..0..0..1..1....1..1..1..1..1
%e A222903 ..0..0..0..3..3....0..0..0..0..0....0..0..1..2..2....1..1..1..1..1
%K A222903 nonn
%O A222903 1,1
%A A222903 _R. H. Hardin_ Mar 09 2013