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 A196898 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4 0
 1, 1, 20, 401, 37194, 9855864, 8351540397, 21716826606543, 177451785967252194 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 2's Diagonal of A196904 LINKS EXAMPLE Some solutions for n=4 ..0..3..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..3..0..0 ..0..0..0..0....0..1..0..3....0..1..3..0....0..1..3..0....0..0..0..0 ..0..3..0..0....0..3..0..0....3..0..0..3....0..0..0..3....1..3..0..3 ..0..1..0..0....0..0..3..0....0..0..0..0....0..0..0..0....0..0..3..0 CROSSREFS Sequence in context: A041181 A041762 A196740 * A068772 A230349 A158601 Adjacent sequences:  A196895 A196896 A196897 * A196899 A196900 A196901 KEYWORD nonn AUTHOR R. H. Hardin Oct 07 2011 STATUS approved

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Last modified December 15 20:49 EST 2018. Contains 318154 sequences. (Running on oeis4.)