A260759 - OEIS

A260759

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010011

48, 115, 652, 2449, 5256, 24103, 104308, 305402, 1256376, 5925416, 21507088, 91126064, 441481332, 1976848566, 8589712868, 45244127036, 228262628800

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

OFFSET

1,1

COMMENTS

Diagonal of A260767

LINKS

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 30 2015

STATUS

approved