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A239332 Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4 0

%I #5 Dec 18 2015 18:18:49

%S 2,31,2187,790681,1527488498,15397080750829,808844678734652790,

%T 222534953338562308679099,320707048341323698139814420023

%N Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4

%C Diagonal of A239340

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 16 2014

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Last modified July 18 10:00 EDT 2024. Contains 374378 sequences. (Running on oeis4.)