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 A255074 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum one 1
 208, 2704, 103929, 4906225, 442721280, 87959696400, 29652533456379, 18203258527980304, 22357815257396827080, 49610361490350558051961, 199432453303213933029482554, 1523887036252507934951348001529 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A255082 LINKS R. H. Hardin, Table of n, a(n) for n = 1..19 EXAMPLE Some solutions for n=3 ..0..1..1..0..0....0..0..0..1..1....0..0..1..1..1....1..0..1..1..0 ..0..1..1..1..1....0..1..1..0..1....0..1..1..1..0....1..1..1..1..0 ..1..1..1..0..1....1..0..1..1..0....0..1..1..1..1....0..1..1..1..0 ..0..1..1..1..1....1..1..0..1..1....1..1..1..1..0....1..1..1..1..0 ..0..1..1..1..0....1..1..1..0..1....0..0..1..0..1....0..1..1..1..1 CROSSREFS Cf. A255082 Sequence in context: A184681 A235674 A235444 * A172967 A231111 A223252 Adjacent sequences:  A255071 A255072 A255073 * A255075 A255076 A255077 KEYWORD nonn AUTHOR R. H. Hardin, Feb 14 2015 STATUS approved

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Last modified October 19 12:05 EDT 2019. Contains 328217 sequences. (Running on oeis4.)