OFFSET
1,1
COMMENTS
Column 4 of A282862.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +24*a(n-2) +86*a(n-3) +170*a(n-4) +283*a(n-5) +346*a(n-6) +277*a(n-7) +180*a(n-8) +108*a(n-9) -251*a(n-10) +433*a(n-11) -547*a(n-12) +330*a(n-13) -46*a(n-14) -68*a(n-15) +25*a(n-16) -14*a(n-17) +11*a(n-18) -3*a(n-19) -2*a(n-20) +a(n-21)
EXAMPLE
Some solutions for n=4
..0..0..1..0. .0..0..0..1. .1..0..0..0. .0..0..1..1. .0..0..1..0
..1..0..1..0. .0..0..0..1. .0..0..0..0. .1..0..0..0. .0..0..0..0
..1..0..0..1. .1..1..0..0. .0..0..0..1. .0..0..1..1. .0..0..0..1
..0..0..0..0. .0..0..0..1. .0..1..0..0. .0..0..0..0. .1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 23 2017
STATUS
approved