# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a203191 Showing 1-1 of 1 %I A203191 #5 Mar 31 2012 12:36:55 %S A203191 1,5,5,25,165,25,95,3209,3209,95,325,53233,263725,53233,325,1121, %T A203191 904175,19617781,19617781,904175,1121,3985,15703631,1508941377, %U A203191 6474088455,1508941377,15703631,3985,14288,271942421,117061422325,2202928769005 %N A203191 T(n,k)=Number of nXk 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor %C A203191 Table starts %C A203191 .....1..........5..............25...................95 %C A203191 .....5........165............3209................53233 %C A203191 ....25.......3209..........263725.............19617781 %C A203191 ....95......53233........19617781...........6474088455 %C A203191 ...325.....904175......1508941377........2202928769005 %C A203191 ..1121...15703631....117061422325......754868206701309 %C A203191 ..3985..271942421...9045835238617...257892549401944763 %C A203191 .14288.4694586685.698574745175731.88078489175441149541 %H A203191 R. H. Hardin, Table of n, a(n) for n = 1..112 %e A203191 Some solutions for n=4 k=4 %e A203191 ..3..3..1..0....1..3..2..4....2..3..4..2....0..1..1..1....4..1..2..1 %e A203191 ..1..3..0..1....1..4..4..4....2..2..4..0....3..3..3..1....4..4..2..4 %e A203191 ..4..2..3..2....1..3..0..0....0..1..0..1....1..2..2..2....3..1..2..4 %e A203191 ..4..0..3..0....3..3..2..0....2..2..4..4....3..3..1..0....0..1..2..4 %K A203191 nonn,tabl %O A203191 1,2 %A A203191 _R. H. Hardin_ Dec 30 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE