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A185574 Number of (n+1)X4 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 0
44944, 4649320, 480362772, 50465542904, 5296925520216, 554710227464956, 58085158860020628, 6085476832181549456, 637558422416624947542, 66788675132255013566752, 6996533512035946774940652 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A185575

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for 3X4

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

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

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

CROSSREFS

Sequence in context: A202987 A183590 A230618 * A209783 A295467 A158931

Adjacent sequences:  A185571 A185572 A185573 * A185575 A185576 A185577

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified December 1 10:49 EST 2021. Contains 349428 sequences. (Running on oeis4.)