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A269081 Number of 7Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once. 1
128, 1760, 43959, 742688, 14011359, 236272677, 4064720816, 67174864630, 1109043586715, 17995383255288, 290431722641261, 4645047826683577, 73887191299532384, 1168678595574438796, 18400291710723401503 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 7 of A269075.
LINKS
EXAMPLE
Some solutions for n=3
..1..0..0. .0..0..0. .1..0..1. .1..0..1. .1..0..0. .1..0..1. .0..0..1
..1..0..0. .0..0..1. .1..0..1. .1..0..0. .0..0..1. .1..0..1. .0..0..1
..0..0..0. .1..0..0. .1..0..0. .1..0..0. .1..0..0. .0..0..0. .1..0..0
..1..0..0. .1..0..1. .1..0..0. .0..0..0. .0..0..0. .0..0..0. .1..0..0
..1..0..1. .1..0..1. .0..0..1. .0..0..0. .0..0..0. .0..0..1. .1..0..0
..0..0..1. .0..0..0. .0..0..1. .0..0..1. .1..0..1. .0..0..1. .1..0..1
..0..1..0. .1..0..0. .0..0..1. .1..0..1. .0..0..0. .0..0..1. .0..0..0
CROSSREFS
Cf. A269075.
Sequence in context: A327772 A306746 A332545 * A200789 A250356 A269587
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 19 2016
STATUS
approved

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Last modified February 26 04:47 EST 2024. Contains 370335 sequences. (Running on oeis4.)