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A186870 Number of (n+1)X5 0..2 arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums 0
3645, 285724, 12048996, 630235528, 30995088416 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A186871

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X5

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

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

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

CROSSREFS

Sequence in context: A253452 A253464 A015294 * A185613 A232837 A252086

Adjacent sequences:  A186867 A186868 A186869 * A186871 A186872 A186873

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 27 2011

STATUS

approved

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Last modified September 27 04:33 EDT 2022. Contains 357052 sequences. (Running on oeis4.)