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A318090 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 23, 15, 1976, 8525, 68301, 504606, 4057433, 31285292, 240249513, 1835199684, 14224588572, 109059566554, 843075304556, 6476620099640, 49958130687711, 384425885605155, 2962333140940211, 22808849182759504, 175696908902774160 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A318091.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..0..1..0. .0..1..0..1..1..0..0. .0..1..1..0..0..1..1
..1..0..0..1..1..1..1. .1..0..0..0..0..1..1. .1..0..1..1..0..1..1
..0..0..0..0..0..0..0. .0..0..1..0..1..1..0. .1..0..1..1..1..0..0
..1..1..0..0..0..0..1. .1..1..0..0..1..0..0. .1..1..0..1..1..1..0
..0..0..1..1..1..1..0. .1..1..0..1..0..0..0. .0..1..0..1..0..0..1
CROSSREFS
Cf. A318091.
Sequence in context: A124601 A040508 A305943 * A070716 A217894 A204598
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 16 2018
STATUS
approved

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)