# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a222905 Showing 1-1 of 1 %I A222905 #4 Mar 09 2013 07:55:03 %S A222905 17,1710,82020,21064292,1616042692,577820456398,51666240687220, %T A222905 19807159813457951,1817220105168370585,706854001296049850823, %U A222905 65258971099531300247508,25532711765112846282295184 %N A222905 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order %C A222905 Column 7 of A222906 %H A222905 R. H. Hardin, Table of n, a(n) for n = 1..25 %e A222905 Some solutions for n=3 %e A222905 ..0..1..1..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0 %e A222905 ..2..0..0..0..0..0..1....0..1..2..0..0..0..0....1..2..0..0..0..0..0 %e A222905 ..0..0..0..0..0..0..3....0..1..1..0..0..0..0....3..1..2..0..0..0..0 %K A222905 nonn %O A222905 1,1 %A A222905 _R. H. Hardin_ Mar 09 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE