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 A251193 Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements 1
 10, 86, 1654, 73170, 7392190, 1688254298, 871573835362, 1016396169840162, 2677928828235940878, 15939286491629789077436, 214333474893685389914820434, 6511102783725658099829377229314, 446854251204340727817177223022169346 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A251201 LINKS R. H. Hardin, Table of n, a(n) for n = 1..20 EXAMPLE Some solutions for n=4 ..0..1..1..1..1....1..1..0..1..0....0..1..0..1..1....0..1..1..1..0 ..1..1..1..0..1....1..0..1..1..1....1..0..1..0..1....1..1..1..0..1 ..1..1..1..1..1....1..1..0..1..0....0..1..1..1..0....1..1..0..1..0 ..1..1..1..1..1....1..1..1..0..1....1..0..1..1..1....1..0..1..0..0 ..1..1..1..1..0....0..1..0..1..1....1..1..0..1..1....1..1..0..0..0 CROSSREFS Sequence in context: A321853 A264174 A218894 * A198858 A331793 A121115 Adjacent sequences:  A251190 A251191 A251192 * A251194 A251195 A251196 KEYWORD nonn AUTHOR R. H. Hardin, Nov 30 2014 STATUS approved

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Last modified January 26 09:41 EST 2022. Contains 350598 sequences. (Running on oeis4.)