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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A272973.

LINKS

Table of n, a(n) for n=1..22.

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

Adjacent sequences:  A272965 A272966 A272967 * A272969 A272970 A272971

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 11 2016

STATUS

approved

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Last modified July 26 22:49 EDT 2021. Contains 346300 sequences. (Running on oeis4.)