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 A253732 Number of (n+2)X(n+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically 0

%I #4 Jan 11 2015 08:03:09

%S 218,1888,7216,54688,400068,3369876,40265740,774250356,16204708792,

%T 401697467244,13688214787176,637511964938288,35097886281624988

%N Number of (n+2)X(n+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically

%C Diagonal of A253740

%e Some solutions for n=4

%e ..0..1..0..1..0..1....0..1..0..1..1..0....1..0..1..0..0..0....0..0..0..1..0..1

%e ..1..0..1..0..1..0....0..0..1..0..1..0....1..1..0..1..0..0....0..0..1..0..1..1

%e ..0..1..1..1..0..1....0..0..0..1..0..1....1..1..1..0..1..0....0..1..0..0..0..1

%e ..1..0..1..1..1..0....1..0..0..0..1..0....0..1..1..1..0..1....1..0..0..0..1..0

%e ..0..1..0..1..0..1....0..1..0..0..0..1....1..0..1..1..1..0....0..1..0..1..0..0

%e ..1..1..1..1..1..1....1..0..1..0..0..0....1..1..0..1..0..1....0..0..1..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 11 2015

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Last modified June 15 13:08 EDT 2024. Contains 373407 sequences. (Running on oeis4.)