A260199 Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010001

26, 80, 685, 5998, 85168, 1819901, 52387329, 2215046304, 135612260310, 11765856260556, 1472760725659628, 265025410670672753, 68284272657868130731, 25283346051613072580257, 13443004796046817010848968

Offset

1,1

Comments

Diagonal of A260207

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Cf. A260207

Sequence in context: A042330 A052241 A042332 * A239172 A291631 A325819

Adjacent sequences: A260196 A260197 A260198 * A260200 A260201 A260202

Keyword

nonn

Author

R. H. Hardin, Jul 19 2015

Status

approved