A259954 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001001

34, 146, 1603, 22622, 501606, 17818241, 949570630, 77682624194, 9896025788402, 1940408456200141, 584639553275100018, 271649247842334658120, 194639319999547441935265, 214876443861835390451767918

Offset

1,1

Comments

Diagonal of A259962

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

Some solutions for n=4
..1..0..0..0..1..0....0..0..1..0..0..0....0..1..0..0..0..0....0..0..0..0..0..1
..0..1..0..0..0..0....1..0..0..0..1..0....0..0..0..0..0..1....1..0..0..0..1..0
..0..0..0..1..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..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..0..0..0..0....0..1..0..0..0..0....0..0..0..0..1..0....0..0..0..0..0..0
..0..0..0..1..0..0....1..0..0..1..0..0....0..0..0..0..0..1....0..1..0..0..0..0

Crossrefs

Cf. A259962

Sequence in context: A105714 A072319 A031398 * A180759 A159744 A192398

Adjacent sequences: A259951 A259952 A259953 * A259955 A259956 A259957

Keyword

nonn

Author

R. H. Hardin, Jul 10 2015

Status

approved