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A203605 Number of nX3 0,1 arrays with adjacent row and column sums unequal 2
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: A196585 A197042 A062189 * A094254 A093647 A244887

Adjacent sequences:  A203602 A203603 A203604 * A203606 A203607 A203608

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2012

STATUS

approved

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Last modified April 13 00:24 EDT 2021. Contains 342934 sequences. (Running on oeis4.)