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A204653 Number of (n+2)X4 0..3 arrays with every 3x3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order 1
162622, 17432664, 2025234324, 191371916425, 19644326343062, 2042453825437207, 206574860386041709, 21111641820895019840, 2161881517804218484538, 220578979155999911714342, 22534813126999888206966172 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A204655

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A043649 A282948 A230925 * A031677 A234989 A110072

Adjacent sequences:  A204650 A204651 A204652 * A204654 A204655 A204656

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2012

STATUS

approved

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Last modified September 25 12:12 EDT 2022. Contains 356984 sequences. (Running on oeis4.)