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 A257155 Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 2848, 16677, 96680, 541896, 3009795, 16759085, 92984383, 514055240, 2836802122, 15636201632, 86098173638, 473735553644, 2605181351054, 14320528333213, 78693423907691, 432325674225100, 2374652982306556, 13041444890192024 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 2 of A257154 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 57 FORMULA Empirical recurrence of order 57 (see link above) EXAMPLE Some solutions for n=3 ..1..1..1..0..0....0..0..1..1..0....1..0..1..1..0....1..0..1..0..0 ..0..0..1..0..0....0..0..0..0..0....0..0..1..1..1....1..0..0..0..1 ..1..0..0..1..0....0..0..0..0..0....0..1..1..1..0....0..0..0..0..0 ..0..0..0..1..1....1..1..1..1..0....0..0..0..1..0....0..0..0..0..1 CROSSREFS Cf. A257154 Sequence in context: A337830 A317472 A317473 * A257148 A254737 A234416 Adjacent sequences:  A257152 A257153 A257154 * A257156 A257157 A257158 KEYWORD nonn AUTHOR R. H. Hardin, Apr 16 2015 STATUS approved

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Last modified December 3 21:17 EST 2021. Contains 349468 sequences. (Running on oeis4.)