A260169 - OEIS

A260169

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001

40, 167, 1054, 6973, 61216, 651914, 7542684, 110062152, 2074273964, 43510471716, 1129587053318, 36200205626536, 1417187649633280

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

OFFSET

1,1

COMMENTS

Diagonal of A260177

LINKS

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 17 2015

STATUS

approved