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A184500 1/12 the number of (n+2)X4 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last 1
1248, 4546, 17077, 66822, 281876, 1216766, 5366312, 24695528, 114505124, 534949496, 2567370992, 12316518616, 59141443312, 289367917056, 1410929565184, 6867521323040, 33909820091856, 166706262886704, 817341247311824 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A184505

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions with a(1,1)=0 for 6X4

..0..0..0..1....0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..1

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

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

..1..0..1..0....0..0..0..0....0..1..1..1....1..0..1..1....1..1..0..0

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

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

CROSSREFS

Sequence in context: A069146 A251648 A235021 * A234212 A047629 A221012

Adjacent sequences:  A184497 A184498 A184499 * A184501 A184502 A184503

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 16 2011

STATUS

approved

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Last modified June 26 10:01 EDT 2022. Contains 354879 sequences. (Running on oeis4.)