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Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order
0

%I #3 Sep 07 2012 11:56:56

%S 5,52,17733,2711768,6423148007,3030359756694,22530453266592757,

%T 22413340656366875404,380159173982235374080849,

%U 663445132155786673512833428,21523865504501144083392978709171

%N Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order

%C Column 7 of A216460

%e Some solutions for n=4

%e ..0..x..1..x..2..x..3....0..x..1..x..2..x..3....0..x..1..x..2..x..3

%e ..x..2..x..3..x..0..x....x..2..x..0..x..4..x....x..2..x..0..x..4..x

%e ..0..x..4..x..5..x..3....0..x..1..x..2..x..1....0..x..5..x..6..x..7

%e ..x..5..x..0..x..2..x....x..5..x..4..x..6..x....x..4..x..1..x..0..x

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 07 2012