A183837 Number of (n+1)X(n+1) binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others

11, 129, 3357, 197133, 25468475, 7377050305, 4699303424280, 6677571801577027, 20920936413508511832, 145733864202975702001549, 2243086329393853088964598846, 76619744675820265499643398728545

Offset

1,1

Comments

Diagonal of A183845

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

Some solutions for 3X3
..1..1..1....1..1..1....1..1..0....1..0..0....1..0..1....1..1..0....1..0..0
..1..0..1....0..0..1....0..1..0....0..1..1....1..1..1....0..0..1....1..1..1
..1..1..1....1..1..1....0..1..0....1..0..1....0..0..1....1..1..0....0..1..0

Crossrefs

Sequence in context: A201877 A015602 A259507 * A015603 A184280 A266947

Adjacent sequences: A183834 A183835 A183836 * A183838 A183839 A183840

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved