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 A256897 Number of (n+2)X(1+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically 2
 512, 2444, 9374, 34698, 113474, 330684, 914320, 2433544, 6176662, 15093057, 35958908, 83879816, 191591614, 430057344, 952623906, 2086634822, 4522903834, 9718017421, 20736059936, 43980645588, 92782630758, 194864839161 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A256904 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 68 FORMULA Empirical recurrence of order 68 (see link above) EXAMPLE Some solutions for n=4 ..0..1..0....0..0..1....1..0..0....0..0..0....0..0..1....0..0..0....1..0..0 ..0..0..0....0..0..1....0..0..0....0..0..1....1..1..1....1..0..0....0..1..0 ..0..1..0....1..0..0....0..0..0....1..1..1....0..0..1....1..1..1....0..0..0 ..0..0..0....1..0..1....0..0..1....1..1..1....1..1..1....0..1..0....1..1..1 ..1..1..0....1..0..0....1..1..0....1..1..1....1..1..0....0..1..0....1..1..1 ..1..0..1....1..0..0....0..1..1....1..1..1....0..1..0....1..0..1....1..0..1 CROSSREFS Cf. A256904 Sequence in context: A253834 A259006 A256904 * A255756 A254845 A254838 Adjacent sequences: A256894 A256895 A256896 * A256898 A256899 A256900 KEYWORD nonn AUTHOR R. H. Hardin, Apr 12 2015 STATUS approved

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Last modified July 20 05:30 EDT 2024. Contains 374441 sequences. (Running on oeis4.)