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A302308
Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
21, 363, 275, 2048, 4772, 18992, 76642, 364922, 1991487, 11850372, 74391348, 486418706, 3257213385, 22149432404, 152046330078, 1049873091893, 7276150005243, 50546516116050, 351666937737820, 2449012961612884
OFFSET
1,1
COMMENTS
Column 7 of A302309.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..0..0. .0..1..0..1..0..1..0. .0..1..0..1..1..1..0
..0..1..0..1..0..1..0. .0..1..0..1..0..0..0. .0..0..0..1..0..1..0
..0..1..0..1..0..1..0. .1..0..0..1..1..1..1. .1..1..1..1..1..0..1
..0..1..0..1..0..1..1. .1..0..0..0..0..0..1. .1..0..1..1..0..0..0
..0..1..0..1..0..1..0. .0..1..0..0..1..0..1. .1..0..0..0..0..0..1
CROSSREFS
Cf. A302309.
Sequence in context: A006105 A167032 A051564 * A303039 A302876 A303524
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 05 2018
STATUS
approved