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 A197109 T(n,k)=Half the number of nXk 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors 9
 2, 6, 6, 16, 78, 16, 61, 1015, 1015, 61, 212, 13526, 50831, 13526, 212, 753, 181032, 2548972, 2548972, 181032, 753, 2661, 2421376, 127561432, 478107878, 127561432, 2421376, 2661, 9415, 32393085, 6385146382, 89735942231, 89735942231 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ......2...........6..............16.................61..................212 ......6..........78............1015..............13526...............181032 .....16........1015...........50831............2548972............127561432 .....61.......13526.........2548972..........478107878..........89735942231 ....212......181032.......127561432........89735942231.......63216096026066 ....753.....2421376......6385146382.....16851142959473....44545247280268585 ...2661....32393085....319626874708...3164557733113615.31390101087203449414 ...9415...433365018..15999836095846.594285270687803282 ..33302..5797636941.800916441358294 .117802.77561969587 LINKS R. H. Hardin, Table of n, a(n) for n = 1..71 EXAMPLE Some solutions for 6X6 ..1..0..0..0....1..0..0..0....1..0..0..0....1..0..0..0....1..0..0..0 ..0..0..2..1....0..0..2..1....0..0..2..1....0..0..2..1....0..0..2..1 ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 ..2..3..0..0....2..1..0..0....2..1..0..0....2..2..0..0....2..1..0..0 ..2..2..1..1....3..0..2..3....0..3..0..3....3..0..3..3....0..0..1..3 ..1..3..3..1....0..2..2..1....1..1..0..1....2..0..0..1....3..3..2..3 CROSSREFS Sequence in context: A194120 A161503 A019076 * A111410 A240087 A083774 Adjacent sequences:  A197106 A197107 A197108 * A197110 A197111 A197112 KEYWORD nonn,tabl AUTHOR R. H. Hardin Oct 10 2011 STATUS approved

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Last modified January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)