OFFSET
1,2
COMMENTS
Column 3 of A280810.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) -57*a(n-2) +127*a(n-3) -93*a(n-4) -129*a(n-5) +216*a(n-6) +165*a(n-7) -477*a(n-8) +66*a(n-9) +411*a(n-10) -123*a(n-11) -319*a(n-12) +183*a(n-13) +102*a(n-14) -81*a(n-15) -30*a(n-16) +36*a(n-17) -8*a(n-18) for n>24
EXAMPLE
Some solutions for n=4
..0..0..1. .0..1..1. .0..0..1. .0..0..0. .0..0..1. .0..0..0. .0..0..0
..0..1..1. .0..1..1. .0..1..0. .1..1..1. .1..1..0. .1..1..1. .0..1..0
..0..0..1. .1..0..0. .1..1..0. .1..0..1. .0..1..1. .0..0..1. .1..1..1
..1..0..0. .0..1..1. .0..1..0. .1..0..0. .0..1..0. .0..0..1. .0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2017
STATUS
approved