login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A183591
1/24 the number of (n+1)X7 0..3 arrays with every 2X2 subblock containing exactly three distinct values
1
417152, 293504588, 202888369698, 140620157014391, 97427089099770040, 67504953898839080670, 46772256761288023913418, 32407200636226196823851489, 22454047915281010754446960190, 15557785658305920745251142731306
OFFSET
1,1
COMMENTS
Column 6 of A183594
LINKS
EXAMPLE
Some solutions with a(1,1)=0 for 3X7
..0..0..0..0..1..0..0....0..0..0..0..1..0..1....0..0..0..0..1..0..1
..1..2..1..3..1..2..1....1..2..1..3..0..2..0....1..2..1..3..0..3..3
..0..0..0..0..0..2..3....0..0..0..1..0..1..1....0..0..0..1..0..1..2
CROSSREFS
Sequence in context: A152869 A251960 A234663 * A184770 A236909 A104920
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2011
STATUS
approved