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 A252080 Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4 0
 64, 322, 3326, 47266, 1034546, 35987921, 1915241208, 157183478333, 19993599538566, 3912790092731608, 1178650827932347077, 547811008058997697527, 392513656335386815116037 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A252088 LINKS EXAMPLE Some solutions for n=4 ..0..0..0..0..0..0....2..1..2..2..2..2....0..2..0..0..2..0....0..0..0..0..2..0 ..0..0..2..0..0..0....2..2..2..2..1..2....0..0..0..2..0..0....0..2..0..0..0..2 ..0..0..0..0..2..0....2..2..2..2..2..2....0..0..2..0..0..0....0..0..0..0..0..0 ..0..0..0..0..0..0....2..2..2..2..2..2....0..2..0..0..0..0....2..0..0..0..2..0 ..0..2..0..0..0..0....2..2..2..1..2..2....2..0..0..0..0..2....0..0..0..0..0..0 ..0..0..0..0..0..2....2..2..2..2..2..2....0..0..0..0..2..0....0..0..0..0..0..0 CROSSREFS Sequence in context: A231942 A221686 A211258 * A017366 A186441 A297642 Adjacent sequences:  A252077 A252078 A252079 * A252081 A252082 A252083 KEYWORD nonn AUTHOR R. H. Hardin, Dec 13 2014 STATUS approved

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Last modified November 27 18:22 EST 2020. Contains 338683 sequences. (Running on oeis4.)