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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 27 2011
STATUS
approved

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Last modified February 25 21:07 EST 2024. Contains 370333 sequences. (Running on oeis4.)