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 A197395 Number of nXn 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,1 for x=0,1,2,3,4 0
 1, 1, 17, 547, 19603, 1982913, 534127371, 330460207137, 459425284426157 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 1's Diagonal of A197401 LINKS EXAMPLE Some solutions containing all values 0 to 4 for n=4 ..1..3..1..1....0..0..2..1....1..3..1..1....1..0..2..1....0..0..0..1 ..2..1..1..3....0..0..1..3....2..1..1..3....3..1..1..3....0..0..1..3 ..0..1..4..1....2..1..4..1....2..1..4..1....1..4..1..1....0..1..4..1 ..1..3..1..0....1..3..1..2....1..3..1..0....0..1..3..1....1..3..1..2 CROSSREFS Sequence in context: A193120 A112716 A218351 * A223519 A012069 A191865 Adjacent sequences:  A197392 A197393 A197394 * A197396 A197397 A197398 KEYWORD nonn AUTHOR R. H. Hardin Oct 14 2011 STATUS approved

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