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A300943
Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
21, 11, 101, 530, 2975, 16587, 99717, 628078, 4085574, 26803581, 176672818, 1167853353, 7727739359, 51133275030, 338411771448, 2240013488296, 14827127102453, 98143499126149, 649628272106039, 4299947674444031
OFFSET
1,1
COMMENTS
Column 7 of A300944.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..1..1. .0..1..1..1..1..1..0. .0..1..0..1..1..0..1
..1..0..0..0..1..1..1. .0..0..1..0..1..1..1. .0..0..1..1..1..0..1
..1..1..0..0..1..1..1. .0..0..1..1..0..1..1. .0..0..1..1..1..1..1
..1..1..0..0..1..1..1. .0..1..1..1..0..1..0. .1..0..0..0..0..0..1
..1..1..1..0..1..1..0. .0..1..1..1..1..1..1. .1..0..0..0..0..0..0
CROSSREFS
Cf. A300944.
Sequence in context: A300505 A086981 A114011 * A270790 A300887 A301497
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 16 2018
STATUS
approved