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A300434
Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
8, 223, 611, 1942, 6235, 21891, 75553, 267811, 932791, 3315683, 11885340, 42868902, 155779487, 569227959, 2088365879, 7693111276, 28421833699, 105230583357, 390303313749, 1449653167542, 5389870205511, 20056547681517, 74683273134149
OFFSET
1,1
COMMENTS
Column 7 of A300435.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0..1..1. .0..0..1..1..1..0..1. .0..0..1..1..1..1..0
..0..0..1..0..1..0..0. .0..1..0..0..0..0..1. .0..1..0..0..0..0..1
..0..1..0..1..0..1..0. .1..0..1..1..0..0..0. .1..0..1..1..1..1..1
..1..0..1..0..1..0..1. .1..0..0..1..0..1..0. .1..1..0..0..0..1..1
..0..1..0..1..0..1..1. .1..1..1..0..0..1..0. .0..0..1..1..1..0..0
CROSSREFS
Cf. A300435.
Sequence in context: A006919 A179122 A300349 * A300768 A300638 A301360
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2018
STATUS
approved