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 A254579 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and the central column and the two maximums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 512, 17125, 774168, 58920922, 7610621332, 1782085332862, 738710766470176, 542677263491039766, 713943639208462145009, 1680972883461652913399702, 7102138169908083180646725958, 53965518477796676606255343307032 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A254586 LINKS R. H. Hardin, Table of n, a(n) for n = 1..13 EXAMPLE Some solutions for n=2 ..1..0..0..0....0..0..0..0....0..0..0..1....1..0..1..1....1..0..0..1 ..1..1..1..0....1..0..0..1....0..0..1..0....1..0..1..0....0..1..1..0 ..1..0..0..1....0..1..1..0....0..1..1..1....1..1..1..0....1..1..1..0 ..1..1..1..0....0..0..0..1....0..1..1..1....0..1..0..1....0..0..0..0 CROSSREFS Sequence in context: A329894 A258523 A257147 * A195657 A072369 A140251 Adjacent sequences: A254576 A254577 A254578 * A254580 A254581 A254582 KEYWORD nonn AUTHOR R. H. Hardin, Feb 01 2015 STATUS approved

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Last modified September 12 04:22 EDT 2024. Contains 375842 sequences. (Running on oeis4.)