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 A257189 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally 14
 512, 2642, 2642, 10285, 10925, 10285, 39891, 47283, 44795, 39891, 160753, 220126, 252288, 213631, 160753, 639228, 1006996, 1488364, 1661786, 991554, 639228, 2462249, 4613955, 9058784, 12941212, 10392884, 4507765, 2462249, 9299264 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....512.....2642......10285.......39891........160753.........639228 ....2642....10925......47283......220126.......1006996........4613955 ...10285....44795.....252288.....1488364.......9058784.......57766489 ...39891...213631....1661786....12941212.....106574293......916707473 ..160753...991554...10392884...108242033....1168362160....13584142368 ..639228..4507765...65770496...895883809...13043226591...209357338632 .2462249.20935219..429271992..7678171235..151536930267..3329338589296 .9299264.97650228.2786976155.65710359362.1739514241158.52183619444529 LINKS R. H. Hardin, Table of n, a(n) for n = 1..199 FORMULA Empirical for column k: k=1: [linear recurrence of order 33] for n>38 Empirical for row n: n=1: [same linear recurrence of order 33] for n>38 EXAMPLE Some solutions for n=2 k=4 ..1..0..0..1..0..0....0..1..0..0..0..0....1..0..1..0..1..0....0..0..0..0..0..0 ..0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..1....1..0..0..0..1..1 ..0..0..0..1..1..0....1..1..1..0..0..1....0..0..0..0..0..0....1..1..1..0..1..1 ..0..0..0..1..1..1....1..0..0..0..0..0....0..0..1..1..1..0....0..0..1..1..0..0 CROSSREFS Column 1 and row 1 are A254982 Sequence in context: A254775 A254728 A254721 * A254989 A254982 A258511 Adjacent sequences:  A257186 A257187 A257188 * A257190 A257191 A257192 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Apr 17 2015 STATUS approved

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Last modified August 5 08:27 EDT 2021. Contains 346464 sequences. (Running on oeis4.)