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A251796 Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01 1
6627, 348679, 17195593, 873945739, 44356434596, 2255553135793, 114701510008550, 5833986692886877, 296731470002944944, 15092940450644308394, 767684502371802140711, 39047592997403421809265 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A251801
LINKS
EXAMPLE
Some solutions for n=1
..0..0..0..2....0..1..0..3....2..2..1..1....1..0..2..2....1..2..2..3
..0..1..2..3....1..0..3..1....1..2..3..3....1..3..3..3....0..1..1..0
CROSSREFS
Sequence in context: A345561 A345816 A250539 * A237794 A237792 A345571
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2014
STATUS
approved

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Last modified June 23 20:17 EDT 2024. Contains 373653 sequences. (Running on oeis4.)