# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a230272 Showing 1-1 of 1 %I A230272 #4 Oct 14 2013 20:05:26 %S A230272 0,30,2318,115630,5524854,261026756,12303458948,580318201510, %T A230272 27360277625336,1290051189888410,60825460594828982, %U A230272 2867902503350552074,135220715263225157514,6375614702009353176064,300608248114662965834544 %N A230272 Number of nX5 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero %C A230272 Column 5 of A230275 %H A230272 R. H. Hardin, Table of n, a(n) for n = 1..210 %e A230272 Some solutions for n=3 %e A230272 ..0..2..1..0..1....0..1..0..1..2....0..1..2..0..2....0..1..2..2..1 %e A230272 ..1..2..0..1..2....2..2..2..1..0....2..0..1..1..1....0..0..0..0..1 %e A230272 ..0..2..2..1..0....1..0..0..1..2....1..2..1..2..0....1..2..1..0..2 %K A230272 nonn %O A230272 1,2 %A A230272 _R. H. Hardin_, Oct 14 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE