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A251800 Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1
4206453, 1271711747, 413630526506, 145329837643171, 52256028323545001, 19010586449609604592, 6950854990205965398511, 2548249927405969316226847, 935397563567598908162444188, 343605100623054019565873475859 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A251801
LINKS
EXAMPLE
Some solutions for n=1
..0..0..2..2..0..0..1..3....0..0..0..1..1..3..3..3....0..0..0..0..0..0..2..0
..0..2..0..0..2..2..3..1....0..0..2..2..2..0..3..3....0..0..0..0..3..3..1..3
CROSSREFS
Sequence in context: A236946 A258884 A250543 * A283033 A209395 A159714
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved

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Last modified April 17 12:12 EDT 2024. Contains 371763 sequences. (Running on oeis4.)