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 A253961 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 14
 512, 2992, 2992, 16544, 20868, 16544, 82064, 142800, 148332, 82064, 423232, 1022752, 1501724, 1048679, 423232, 2154496, 7533252, 15946360, 16186768, 7777096, 2154496, 11244672, 55225242, 167174472, 240903042, 168988280 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ......512......2992.......16544........82064.........423232..........2154496 .....2992.....20868......142800......1022752........7533252.........55225242 ....16544....148332.....1501724.....15946360......167174472.......1776422573 ....82064...1048679....16186768....240903042.....3635332193......55074999330 ...423232...7777096...168988280...3624943928....77993064012....1716319825801 ..2154496..56216811..1798654745..55018824334..1717613401125...54401550145686 .11244672.413408572.18976071008.841599218625.37660244542860.1720060910899929 LINKS R. H. Hardin, Table of n, a(n) for n = 1..283 FORMULA Empirical for column k: k=1: [linear recurrence of order 8] for n>15 Empirical for row n: n=1: [same linear recurrence of order 8] for n>15 EXAMPLE Some solutions for n=2 k=4 ..0..0..0..1..0..1....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..1..1..1 ..1..0..1..1..1..1....0..1..1..0..1..0....1..0..0..0..0..0....0..1..1..0..0..0 ..1..0..1..1..1..0....0..0..0..0..1..0....1..0..1..0..1..1....1..0..0..1..0..1 ..0..0..0..1..0..0....0..0..0..0..1..1....0..0..0..0..1..0....0..1..1..0..1..0 CROSSREFS Column 1 and row 1 are A253757 Sequence in context: A254189 A253801 A253794 * A253764 A253757 A250139 Adjacent sequences:  A253958 A253959 A253960 * A253962 A253963 A253964 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 20 2015 STATUS approved

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Last modified October 27 01:02 EDT 2020. Contains 338035 sequences. (Running on oeis4.)