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 A208703 Number of nXn 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
 1, 8, 196, 16084, 4226368, 3613193828, 10001404535216, 89755737081698964, 2610569024927748701352, 246105734855228896970291844, 75198808251676193628977268566832, 74474161314983311603786393034039933768 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A208709 LINKS R. H. Hardin, Table of n, a(n) for n = 1..20 EXAMPLE Some solutions for n=4 ..0..0..1..0....0..0..0..1....0..1..0..1....0..0..0..1....0..1..1..0 ..0..0..1..0....1..0..1..1....1..0..1..1....1..0..0..0....0..0..1..0 ..1..1..0..0....0..0..1..0....0..0..0..1....1..1..1..1....0..0..1..1 ..1..1..0..0....0..1..0..0....0..1..0..1....1..0..1..1....1..0..0..0 CROSSREFS Sequence in context: A103500 A119299 A024287 * A020329 A034861 A221121 Adjacent sequences:  A208700 A208701 A208702 * A208704 A208705 A208706 KEYWORD nonn AUTHOR R. H. Hardin Mar 01 2012 STATUS approved

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