login
A303455
Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
64, 8192, 658204, 55681352, 4729712941, 401712282811, 34135836415352, 2900896415900109, 246526793165030703, 20950755659230072765, 1780476037311841468019, 151311828052607951348154
OFFSET
1,1
COMMENTS
Column 7 of A303456.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..1..1. .0..0..0..1..1..1..1. .0..0..0..1..0..1..0
..0..0..0..0..0..0..0. .0..0..0..0..1..0..0. .0..0..0..0..1..0..0
..0..0..0..1..1..0..0. .0..0..0..1..0..1..1. .0..0..0..1..1..0..1
..0..0..0..1..0..0..1. .0..0..0..1..0..1..1. .0..0..0..1..0..0..0
..0..0..0..1..1..1..1. .0..1..0..1..1..0..0. .0..1..0..1..1..0..0
CROSSREFS
Cf. A303456.
Sequence in context: A300214 A302746 A300803 * A303461 A301442 A302014
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 24 2018
STATUS
approved