OFFSET
1,1
COMMENTS
Column 4 of A281837.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) +32*a(n-3) -252*a(n-4) -362*a(n-5) -318*a(n-6) +727*a(n-7) +2017*a(n-8) +937*a(n-9) -426*a(n-10) -3029*a(n-11) +1089*a(n-12) +9*a(n-13) +232*a(n-14) -2190*a(n-15) +162*a(n-16) -149*a(n-17) +512*a(n-18) +243*a(n-19) +198*a(n-20) -184*a(n-21) -34*a(n-22) +48*a(n-23) for n>24
EXAMPLE
Some solutions for n=4
..0..1..1..0. .0..0..0..1. .0..1..1..1. .0..0..1..0. .0..0..0..1
..0..0..0..0. .1..1..0..1. .1..0..0..1. .0..1..1..1. .0..1..1..0
..0..1..1..0. .1..0..1..0. .1..0..1..1. .1..1..0..0. .1..0..1..0
..1..1..1..1. .1..0..0..1. .1..1..1..0. .1..0..0..1. .0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2017
STATUS
approved