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A183975 Half the number of (n+1)X5 0..3 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 0
64976, 2735260, 124987628, 6533126804, 347446206704, 19440886672754, 1094585980533770, 63025132086371298, 3637470871443612084 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A183976

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for 3X5

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

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

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

...

...5..4..5..5.......3..3..3..4.......1..2..2..2.......4..4..4..3...

...4..5..5..4.......3..4..4..5.......0..1..1..2.......3..3..3..4...

CROSSREFS

Sequence in context: A061738 A198779 A104939 * A234908 A204640 A015344

Adjacent sequences:  A183972 A183973 A183974 * A183976 A183977 A183978

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2011

STATUS

approved

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Last modified April 23 14:15 EDT 2019. Contains 322386 sequences. (Running on oeis4.)