A202890 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

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”).

Other ways to Give

A202890

Number of (n+2) X (n+2) binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals.

96, 844, 17116, 505725, 22949327, 1847238109, 251440992886, 56732547157097, 21646795515491131, 13988367087026139412, 15250027197295200766732

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3

..1..0..1..1..1....1..1..1..1..1....1..1..1..1..1....0..1..1..0..0

..1..1..1..1..1....1..1..1..0..0....1..1..1..0..1....1..1..0..1..1

..1..1..1..1..1....1..1..1..0..1....1..1..1..1..0....1..0..1..1..1

..1..0..1..1..1....0..1..1..0..1....0..1..1..1..0....0..1..1..0..1

..0..1..1..0..0....1..1..0..0..0....1..1..0..0..0....0..1..1..1..0

CROSSREFS

Diagonal of A202898

Sequence in context: A096783 A253410 A326576 * A173615 A103846 A203979

Adjacent sequences: A202887 A202888 A202889 * A202891 A202892 A202893

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Dec 25 2011

STATUS

approved