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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 (list; table; graph; refs; listen; history; text; internal format)
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

R. H. Hardin, Table of n, a(n) for n = 1..112

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

Adjacent sequences:  A234979 A234980 A234981 * A234983 A234984 A234985

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 02 2014

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)