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A234982
T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 8
8
182, 1664, 1664, 14420, 34862, 14420, 127982, 684282, 684282, 127982, 1127550, 13888792, 29606864, 13888792, 1127550, 9962574, 280501760, 1373159910, 1373159910, 280501760, 9962574, 87941706, 5681668040, 62993589692
OFFSET
1,1
COMMENTS
Table starts
......182.........1664...........14420.............127982...............1127550
.....1664........34862..........684282...........13888792.............280501760
....14420.......684282........29606864.........1373159910...........62993589692
...127982.....13888792......1373159910.......148913665958........16062528821746
..1127550....280501760.....62993589692.....16062528821746......4063185907422366
..9962574...5681668040...2917193420904...1752801119273172...1047618966093964184
.87941706.115047739004.134849510289180.191417616710931012.270097938511601692116
LINKS
FORMULA
Empirical for column k:
k=1: a(n) = 9*a(n-1) +13*a(n-2) -134*a(n-3) +a(n-4) +480*a(n-5) -224*a(n-6) -96*a(n-7)
k=2: [order 31]
EXAMPLE
Some solutions for n=2 k=4
..0..0..3..0..0....0..0..0..3..1....1..0..2..2..4....0..0..0..1..0
..0..4..4..4..1....0..4..1..0..2....0..3..4..0..4....0..4..2..4..1
..1..2..0..3..4....0..2..3..4..4....1..0..4..1..4....0..4..0..2..3
CROSSREFS
Sequence in context: A047636 A157205 A154067 * A234975 A186125 A209852
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 02 2014
STATUS
approved