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A185571 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum 3
0, 704, 704, 1936, 15776, 1936, 34816, 319448, 319448, 34816, 172992, 7140256, 13565936, 7140256, 172992, 2053216, 159990728, 886180500, 886180500, 159990728, 2053216, 12950528, 3638705368, 48714917964 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

.......0.......704......1936.....34816......172992....2053216.12950528

.....704.....15776....319448...7140256...159990728.3638705368

....1936....319448..13565936.886180500.48714917964

...34816...7140256.886180500

..172992.159990728

.2053216

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

Some solutions for 4X3

..2..0..3....2..2..3....2..0..3....2..0..2....2..2..3....0..2..0....0..3..0

..2..3..1....3..2..2....3..1..3....2..3..2....3..2..0....0..0..0....0..3..0

..1..2..2....3..0..1....1..1..2....3..3..3....1..3..2....3..2..3....1..1..1

..2..3..1....3..2..2....3..2..2....1..2..1....2..0..1....0..2..0....0..1..0

CROSSREFS

Sequence in context: A257721 A253396 A188370 * A186923 A185807 A105846

Adjacent sequences:  A185568 A185569 A185570 * A185572 A185573 A185574

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified December 4 21:33 EST 2016. Contains 278755 sequences.