login
A272968
Number of nX3 0..1 arrays with exactly n+3-2 having value 1 and no three 1s forming an isosceles triangle.
0
3, 10, 12, 4, 14, 36, 23, 44, 14, 48, 14, 52, 14, 56, 16, 60, 14, 64, 14, 68, 14, 72
OFFSET
1,1
COMMENTS
Column 3 of A272973.
EXAMPLE
Some solutions for n=3
..1..0..0. .0..1..1. .1..0..1. .0..1..1. .1..0..0. .0..0..1. .0..0..0
..1..0..0. .0..0..0. .1..0..1. .1..0..0. .1..0..1. .0..0..1. .1..0..1
..0..1..1. .0..1..1. .0..0..0. .1..0..0. .0..0..1. .1..1..0. .1..0..1
CROSSREFS
Cf. A272973.
Sequence in context: A309525 A253807 A212993 * A020681 A283770 A088338
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 11 2016
STATUS
approved