OFFSET
1,1
COMMENTS
Column 4 of A282791.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +28*a(n-2) +26*a(n-3) -404*a(n-4) -1508*a(n-5) -2631*a(n-6) -1242*a(n-7) +1650*a(n-8) +5880*a(n-9) +5486*a(n-10) +2762*a(n-11) -2635*a(n-12) -3886*a(n-13) -3543*a(n-14) -896*a(n-15) -39*a(n-16) +322*a(n-17) -49*a(n-18).
EXAMPLE
Some solutions for n=4
..0..0..1..0. .1..0..1..0. .0..1..0..0. .1..1..0..0. .0..0..1..0
..0..0..0..0. .0..0..1..0. .0..0..0..1. .0..0..0..0. .1..0..0..1
..1..1..1..0. .1..0..1..0. .0..0..0..0. .0..0..0..0. .0..1..0..1
..0..0..0..0. .1..0..0..0. .0..1..1..1. .0..1..1..1. .0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 21 2017
STATUS
approved