%I #4 Apr 04 2014 08:46:22
%S 2,4,4,8,18,8,16,78,78,16,32,334,722,334,32,64,1418,6376,6376,1418,64,
%T 128,6002,55680,115194,55680,6002,128,256,25374,483926,2044806,
%U 2044806,483926,25374,256,512,107230,4195892,36002110,73440130,36002110,4195892
%N T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4
%C Table starts
%C ....2.......4..........8............16..............32..............64
%C ....4......18.........78...........334............1418............6002
%C ....8......78........722..........6376...........55680..........483926
%C ...16.....334.......6376........115194.........2044806........36002110
%C ...32....1418......55680.......2044806........73440130......2607237326
%C ...64....6002.....483926......36002110......2607237326....186214281670
%C ..128...25374....4195892.....631121148.....92003133794..13200773101956
%C ..256..107230...36331704...11038084086...3236101836296.932020621734728
%C ..512..453098..314419494..192823850946.113624636162418
%C .1024.1914498.2720368268.3366365227614
%H R. H. Hardin, <a href="/A240347/b240347.txt">Table of n, a(n) for n = 1..97</a>
%F Empirical for column k:
%F k=1: a(n) = 2*a(n-1)
%F k=2: a(n) = 6*a(n-1) -7*a(n-2) -4*a(n-3) +8*a(n-4)
%F k=3: [order 23]
%e Some solutions for n=4 k=4
%e ..2..0..0..0....0..0..0..0....2..0..0..2....0..0..0..2....2..2..2..0
%e ..0..0..2..0....0..0..2..2....0..3..2..0....2..0..0..0....2..2..2..0
%e ..2..0..2..2....2..2..2..2....2..1..1..2....2..2..0..0....0..3..2..0
%e ..0..0..0..2....2..0..2..3....2..2..2..2....2..0..0..0....2..2..2..2
%Y Column 1 is A000079
%K nonn,tabl
%O 1,1
%A _R. H. Hardin_, Apr 04 2014
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