A208102 - OEIS

A208102

Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically

2, 16, 78, 361, 6235, 261121, 4747545, 90782784, 18473477832, 9693564675601, 668167531935849, 46925086118316121, 128627682135940435023, 919037094400530117376144, 213624920267877921384329046

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OFFSET

1,1

COMMENTS

Diagonal of A208108

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..23

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A356372 A028336 A244717 * A207723 A208835 A208683

Adjacent sequences: A208099 A208100 A208101 * A208103 A208104 A208105

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 23 2012

STATUS

approved