OFFSET
1,2
COMMENTS
Column 3 of A298454.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +4*a(n-2) +21*a(n-3) -16*a(n-4) -60*a(n-5) -83*a(n-6) +55*a(n-7) +144*a(n-8) +125*a(n-9) +67*a(n-10) -98*a(n-11) -105*a(n-12) -92*a(n-13) +37*a(n-14) +11*a(n-15) -7*a(n-16) +3*a(n-17) for n>18
EXAMPLE
Some solutions for n=7
..0..1..1. .0..1..1. .0..0..0. .0..0..0. .0..1..0. .0..0..0. .0..0..1
..0..1..1. .0..1..1. .0..0..0. .0..0..0. .0..1..0. .0..0..0. .0..0..1
..1..1..1. .1..1..1. .1..0..1. .1..1..0. .1..1..1. .0..1..1. .1..0..0
..1..0..0. .1..0..0. .1..0..1. .0..0..0. .1..1..0. .0..1..1. .1..0..0
..1..0..0. .1..0..0. .1..1..1. .0..0..0. .1..1..0. .0..0..0. .0..0..0
..0..0..1. .1..1..1. .1..1..0. .1..0..1. .0..0..0. .0..1..1. .1..0..1
..0..0..1. .1..1..1. .1..1..0. .1..0..1. .0..0..0. .0..1..1. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2018
STATUS
approved