A203605 - OEIS

A203605

Number of nX3 0,1 arrays with adjacent row and column sums unequal

2, 20, 126, 728, 4374, 25788, 149794, 866692, 4989242, 28600208, 163479486, 932166044, 5304572502, 30137247224, 170986774826, 968989758580, 5485913976922, 31032085382272, 175409808771550, 990873450379996

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 3 of A203610

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for 4X4

..1..0..0....0..0..0....1..0..1....1..1..1....1..1..1....0..0..0....1..0..0

..0..1..1....0..0..1....1..1..1....0..1..1....0..0..1....1..1..0....0..0..0

..1..1..1....1..0..1....0..1..0....1..1..1....1..0..1....0..0..1....0..1..0

..0..1..0....1..0..0....1..0..1....1..1..0....1..0..0....1..0..1....0..1..1

CROSSREFS

Sequence in context: A197042 A350549 A062189 * A373614 A094254 A093647

Adjacent sequences: A203602 A203603 A203604 * A203606 A203607 A203608

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2012

STATUS

approved