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 A240323 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4 1

%I #4 Apr 03 2014 22:23:02

%S 4,17,116,455,1677,8091,28448,117304,513841,1871262,7963314,32859835,

%T 125032724,531287384,2129046798,8380565700,35092450158,139319279619,

%U 559869375850,2308650810237,9177286253390,37241010454269,151821739788451

%N Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

%C Column 3 of A240327

%H R. H. Hardin, <a href="/A240323/b240323.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..3..2..3....3..2..2....3..2..2....2..3..3....3..2..3....2..3..2....2..3..3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 03 2014

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Last modified June 4 13:02 EDT 2023. Contains 363128 sequences. (Running on oeis4.)