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A303101 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 2208, 128921, 8650205, 568099880, 37220475492, 2441756629583, 160164698180399, 10505922762123798, 689141410588573095, 45204400412352498100, 2965196935043545360686, 194503015320143538663000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A303102.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..1..1. .0..0..1..1..1..1..0. .0..0..1..0..0..0..0
..0..0..1..0..0..1..0. .0..0..1..1..0..0..0. .0..0..1..1..0..1..0
..0..0..0..1..1..0..1. .0..0..0..1..0..0..1. .0..0..0..1..1..0..0
..0..0..1..1..0..0..0. .0..0..1..0..1..1..1. .0..0..1..0..0..1..1
..0..0..1..1..1..1..1. .0..0..1..1..1..0..0. .0..0..1..1..0..1..1
CROSSREFS
Cf. A303102.
Sequence in context: A017415 A046246 A302380 * A302952 A151580 A173175
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 18 2018
STATUS
approved

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Last modified April 22 11:51 EDT 2024. Contains 371898 sequences. (Running on oeis4.)