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A222678 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

%I A222678 #5 Jul 23 2025 02:54:58
%S A222678 17,359,6463,687222,20997839,3254033272,169563633880,40055385632924,
%T A222678 2635079897572698,708119862583697101,48390899167019147315
%N A222678 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
%C A222678 Column 7 of A222679
%e A222678 Some solutions for n=3
%e A222678 ..0..0..0..0..0..1..2....0..0..0..0..0..1..2....0..0..0..0..0..1..2
%e A222678 ..0..0..0..0..0..1..2....0..0..0..0..0..2..0....0..0..0..0..0..0..3
%e A222678 ..0..0..0..0..1..1..1....0..0..0..0..0..2..2....0..0..0..0..0..2..2
%K A222678 nonn
%O A222678 1,1
%A A222678 _R. H. Hardin_ Feb 28 2013