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 A254728 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically 9
 512, 2630, 2630, 11677, 14226, 11677, 48168, 76615, 76615, 48168, 185287, 364039, 520824, 364039, 185287, 689386, 1645201, 3438279, 3438279, 1645201, 689386, 2473062, 7620738, 21750375, 32264339, 21750375, 7620738, 2473062, 8658471 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ......512......2630.......11677.........48168.........185287...........689386 .....2630.....14226.......76615........364039........1645201..........7620738 ....11677.....76615......520824.......3438279.......21750375........138938314 ....48168....364039.....3438279......32264339......264545705.......2224885924 ...185287...1645201....21750375.....264545705.....2863637632......32722394252 ...689386...7620738...138938314....2224885924....32722394252.....506044306865 ..2473062..35110289...888613045...18677147321...369393588378....7806258134979 ..8658471.160937385..5611704536..153918583667..4105206149596..118358703000421 .29751063.741804750.35547726137.1268250685728.46009312739781.1814886626676510 LINKS R. H. Hardin, Table of n, a(n) for n = 1..219 FORMULA Empirical for column k: k=1: [linear recurrence of order 38] for n>42 k=2: [order 75] for n>91 EXAMPLE Some solutions for n=2 k=4 ..0..0..0..0..0..1....0..1..0..0..0..0....0..1..1..0..0..0....0..1..0..0..0..0 ..1..0..0..0..0..1....0..0..0..1..1..0....1..0..0..1..1..0....0..0..0..0..1..1 ..0..0..1..1..1..0....0..1..0..0..1..1....0..1..0..1..0..0....1..1..1..1..0..0 ..1..0..1..1..1..1....0..1..1..1..1..1....0..1..1..0..0..1....1..0..0..1..0..1 CROSSREFS Sequence in context: A254242 A254235 A254775 * A254721 A257189 A254989 Adjacent sequences:  A254725 A254726 A254727 * A254729 A254730 A254731 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 06 2015 STATUS approved

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Last modified September 25 15:27 EDT 2021. Contains 347658 sequences. (Running on oeis4.)