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 A250950 Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element 1
 15, 392, 36016, 11633448, 13211127617, 52746349035592, 740399698245965774, 36539401198968631193728, 6339835499950780464168370698, 3867371786117427361119320198505328 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A250956 LINKS R. H. Hardin, Table of n, a(n) for n = 1..19 EXAMPLE Some solutions for n=3 ..1..0..1..1....0..1..0..1....1..0..0..1....0..1..1..0....0..1..0..0 ..0..0..0..0....1..1..0..0....1..1..1..1....0..1..1..1....1..1..0..0 ..0..1..1..0....1..1..1..0....0..0..0..0....0..1..0..1....0..0..1..1 ..0..0..1..1....1..1..0..0....1..0..0..0....0..1..1..1....1..1..1..0 CROSSREFS Sequence in context: A069990 A157581 A143001 * A323838 A278981 A279133 Adjacent sequences: A250947 A250948 A250949 * A250951 A250952 A250953 KEYWORD nonn AUTHOR R. H. Hardin, Nov 28 2014 STATUS approved

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Last modified March 31 08:44 EDT 2023. Contains 361645 sequences. (Running on oeis4.)