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A204948 Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..2 introduced in row major order 1
4041, 41353, 457852, 4566666, 48128792, 523821125, 5530809140, 58869604914, 631407564661, 6728446852074, 71782201831466, 767149995946511, 8188160552795512, 87406003728948696, 933400577286373617 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A204954
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0....0..1..2..2....0..0..1..2....0..1..0..1....0..0..0..0
..0..0..0..0....2..2..2..0....1..1..1..1....2..2..2..1....0..0..0..0
..1..1..2..1....0..2..2..0....0..2..1..1....1..1..1..1....1..2..2..1
..2..2..2..2....0..0..0..0....2..2..1..2....1..1..2..2....1..1..1..1
..2..0..0..0....2..2..2..2....1..1..1..2....0..1..2..2....2..0..1..1
CROSSREFS
Sequence in context: A252686 A178274 A332458 * A237030 A252809 A202313
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 20 2012
STATUS
approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)