A206999 - OEIS

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A206999

Number of nX7 0..1 arrays avoiding 0 1 0 horizontally and 0 1 1 vertically

65, 4225, 105936, 2346621, 41429335, 683241763, 10432265840, 154004233160, 2204564726744, 31044446020755, 431344655622502, 5945601513772082, 81452204001027552, 1111514446777014206, 15124130993994618127

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

OFFSET

1,1

COMMENTS

Column 7 of A207000

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A206876 A188506 A206882 * A189615 A206888 A188772

Adjacent sequences: A206996 A206997 A206998 * A207000 A207001 A207002

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 14 2012

STATUS

approved