A259507 Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0101 0111.

11, 129, 3270, 189211, 25009044, 7648655920, 5419416491691, 8914474231755265, 34039639215186145019, 301765460087856679774300, 6209472935212672846469197010, 296556812586707699012345431324530

Offset

1,1

Comments

Diagonal of A259515

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

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

Crossrefs

Cf. A259515

Sequence in context: A024144 A201877 A015602 * A183837 A015603 A184280

Adjacent sequences: A259504 A259505 A259506 * A259508 A259509 A259510

Keyword

nonn

Author

R. H. Hardin, Jun 29 2015

Status

approved