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 A196782 Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,4,3,0,1 for x=0,1,2,3,4 1
 1, 7, 39, 145, 797, 3569, 17175, 81389, 385231, 1829101, 8668831, 41113007, 194955001, 924449179, 4383753391, 20787435021, 98573175383, 467429309303, 2216527199343, 10510668481659, 49841089379745, 236344089239897 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Every 0 is next to 0 2's, every 1 is next to 1 4's, every 2 is next to 2 3's, every 3 is next to 3 0's, every 4 is next to 4 1's Column 4 of A196786 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 2*a(n-1) +10*a(n-2) +15*a(n-3) -a(n-4) -6*a(n-5) -28*a(n-6) -14*a(n-7) +13*a(n-8) -13*a(n-9) +3*a(n-10) EXAMPLE Some solutions for n=5 ..0..3..0..0....0..3..0..0....0..0..3..0....0..0..3..0....0..0..0..0 ..3..0..0..3....0..0..0..0....0..0..0..0....0..3..0..3....0..3..0..0 ..0..3..0..0....3..0..0..0....3..0..0..0....0..3..0..0....0..1..0..0 ..0..3..0..0....0..0..0..0....0..0..0..0....0..0..0..0....1..4..1..0 ..0..0..3..0....0..3..0..0....0..0..0..0....0..3..0..0....0..1..0..0 CROSSREFS Sequence in context: A158576 A215441 A027482 * A128554 A032207 A004057 Adjacent sequences:  A196779 A196780 A196781 * A196783 A196784 A196785 KEYWORD nonn AUTHOR R. H. Hardin Oct 06 2011 STATUS approved

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Last modified May 19 07:18 EDT 2013. Contains 225429 sequences.