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A272955
Number of nX5 0..1 arrays with exactly n+5-2 having value 1 and no three 1s forming an isosceles right triangle.
0
5, 34, 107, 210, 768, 1898, 8211, 37402, 192579, 635086, 2366644, 9742518, 38088673, 149636652, 590014096, 2364716800, 9270827068, 36956377972, 147747894211, 585280946044
OFFSET
1,1
COMMENTS
Column 5 of A272958.
EXAMPLE
Some solutions for n=5
..1..0..0..0..0. .1..0..1..0..0. .1..1..0..1..0. .0..0..1..1..1
..1..0..0..1..1. .1..0..1..0..1. .0..0..0..0..1. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..1. .1..0..0..0..0
..1..1..0..0..1. .0..0..0..0..0. .0..0..0..0..1. .1..0..1..0..0
..0..0..0..0..1. .1..1..0..0..0. .1..0..1..0..0. .1..0..0..1..0
CROSSREFS
Cf. A272958.
Sequence in context: A068560 A039773 A289947 * A317297 A135973 A186636
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 11 2016
STATUS
approved