A203606 Number of nX4 0,1 arrays with adjacent row and column sums unequal

2, 44, 728, 10016, 129656, 1649668, 20742920, 256903112, 3151779352, 38451720324, 466959465212, 5648183965356, 68109502172416, 819331697005244, 9836181686366944, 117879822160978616, 1410647793481255432

Offset

1,1

Comments

Column 4 of A203610

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

Some solutions for 4X4
..0..0..1..1....0..1..1..0....1..1..0..0....1..1..0..1....1..0..0..1
..0..0..0..1....0..0..1..0....1..0..1..1....0..0..1..0....0..0..1..0
..0..0..0..0....1..1..1..0....0..0..1..0....0..1..1..1....1..1..0..1
..1..0..0..0....1..1..1..1....1..1..1..1....0..1..0..1....1..1..0..0

Crossrefs

Sequence in context: A242856 A035605 A285746 * A009620 A001627 A202747

Adjacent sequences: A203603 A203604 A203605 * A203607 A203608 A203609

Keyword

nonn

Author

R. H. Hardin Jan 03 2012

Status

approved