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 A199035 Number of nX2 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors 1
 0, 0, 3, 12, 29, 143, 877, 3516, 8987, 81112, 342188, 667215, 7467547, 32878290, 56393050, 697859958, 3145355560, 5126416780, 66563431854, 303713138234, 484994209944, 6455395706354, 29679649731124, 47028010467376 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Column 2 of A199041 LINKS R. H. Hardin, Table of n, a(n) for n = 1..99 EXAMPLE Some solutions for n=4 ..0..0....0..1....0..1....0..1....0..0....0..0....0..0....0..0....0..0....0..0 ..1..0....0..1....0..1....0..1....1..0....1..1....0..1....1..2....0..1....1..1 ..1..1....0..1....0..2....2..1....1..2....2..1....2..1....1..2....1..1....1..2 ..2..2....2..2....2..2....2..2....1..2....2..2....2..1....1..2....2..2....2..2 CROSSREFS Sequence in context: A215640 A104353 A001860 * A101459 A051408 A164013 Adjacent sequences:  A199032 A199033 A199034 * A199036 A199037 A199038 KEYWORD nonn AUTHOR R. H. Hardin Nov 02 2011 STATUS approved

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Last modified May 26 01:28 EDT 2013. Contains 225652 sequences.