OFFSET
1,2
COMMENTS
Row 5 of A297395.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +4*a(n-2) +69*a(n-3) +50*a(n-4) -a(n-5) -785*a(n-6) -696*a(n-7) -757*a(n-8) +2847*a(n-9) +1739*a(n-10) +270*a(n-11) -1916*a(n-12) -1560*a(n-13) -932*a(n-14) +1326*a(n-15) +652*a(n-16) +140*a(n-17) -373*a(n-18) -14*a(n-19) -28*a(n-20) +30*a(n-21)
EXAMPLE
Some solutions for n=5
..0..1..1..0..0. .0..0..0..1..1. .0..0..1..0..0. .1..1..0..0..0
..0..0..0..0..0. .1..1..0..0..0. .1..0..0..1..0. .0..0..0..1..0
..1..0..0..0..0. .0..0..0..0..0. .0..1..0..0..0. .1..1..0..0..1
..0..1..0..1..0. .0..0..0..0..0. .0..0..0..1..1. .0..0..0..0..0
..0..0..0..0..1. .0..0..0..1..1. .0..0..0..0..0. .0..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2017
STATUS
approved