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A317822 Number of nX7 0..1 arrays with every element unequal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
8, 1634, 3150, 48526, 179111, 1458418, 7370716, 49813114, 285365386, 1801862295, 10780737885, 66250927857, 402362478261, 2454261649360, 14947185490935, 91152367042211, 554926695836229, 3385228443629637, 20612211780845789 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A317823.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..1..0..0. .0..1..1..1..0..0..1. .0..1..0..1..0..0..1
..1..1..0..1..1..0..1. .0..1..0..0..0..1..0. .1..0..0..1..1..1..1
..0..0..0..1..0..0..1. .1..0..0..0..1..1..0. .0..0..1..1..0..0..0
..0..0..1..1..0..0..0. .1..0..1..1..1..0..0. .0..1..1..0..0..0..0
..1..0..1..0..0..1..1. .0..1..1..0..0..0..1. .0..1..1..0..1..1..1
CROSSREFS
Cf. A317823.
Sequence in context: A229150 A160231 A213961 * A318429 A318097 A230913
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 07 2018
STATUS
approved

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Last modified March 1 13:16 EST 2024. Contains 370433 sequences. (Running on oeis4.)