OFFSET
1,1
COMMENTS
Row 3 of A281715.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +8*a(n-2) -16*a(n-3) -46*a(n-4) +39*a(n-5) +121*a(n-6) -66*a(n-7) -185*a(n-8) +78*a(n-9) +216*a(n-10) -71*a(n-11) -182*a(n-12) +51*a(n-13) +107*a(n-14) -24*a(n-15) -43*a(n-16) +7*a(n-17) +10*a(n-18) -a(n-19) -a(n-20) for n>21.
EXAMPLE
Some solutions for n=4
..0..0..0..1. .0..0..0..0. .0..1..0..0. .0..0..1..1. .0..0..1..0
..0..0..1..0. .1..1..1..1. .1..0..1..0. .0..0..1..1. .0..1..0..1
..1..1..0..1. .1..1..1..1. .0..1..0..1. .1..1..0..0. .1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 28 2017
STATUS
approved