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A207213 Number of 7Xn 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 0

%I #4 Mar 31 2012 12:37:16

%S 1440,2073600,1009600274,500670359576,261868042220093,

%T 137715069370357544,72904426459924759331

%N Number of 7Xn 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal

%C Row 7 of A207208

%e Some solutions for n=4

%e ..0..1..1..0....1..1..0..1....2..2..1..0....0..2..2..1....1..0..0..2

%e ..0..1..2..1....1..1..0..1....0..1..2..1....1..2..2..1....1..1..1..0

%e ..0..0..0..0....0..0..0..0....0..1..0..0....2..0..1..1....0..1..0..0

%e ..0..2..2..0....2..1..0..0....2..0..0..0....2..1..1..0....0..0..0..2

%e ..0..1..0..2....1..2..2..0....0..2..0..2....1..0..0..2....2..2..2..0

%e ..2..2..2..2....2..1..2..2....1..2..2..2....1..2..0..2....0..0..2..1

%e ..1..2..2..2....2..0..0..2....0..2..2..0....0..2..2..2....2..1..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 15 2012

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)