OFFSET
1,2
COMMENTS
Row 5 of A297595.
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) +140*a(n-4) +75*a(n-5) -819*a(n-6) -2333*a(n-7) -3025*a(n-8) +2643*a(n-9) +10976*a(n-10) +11484*a(n-11) +8292*a(n-12) -9866*a(n-13) -21676*a(n-14) -50620*a(n-15) -23742*a(n-16) +4580*a(n-17) +75360*a(n-18) +31530*a(n-19) +13258*a(n-20) -56614*a(n-21) -22102*a(n-22) -18586*a(n-23) +348*a(n-24) -4914*a(n-25) -882*a(n-26)
EXAMPLE
Some solutions for n=7
..0..1..0..0..0..0..0. .0..1..0..0..0..0..0. .0..0..1..0..0..0..0
..0..0..1..0..0..0..0. .1..0..0..0..1..1..0. .0..1..0..0..0..0..0
..0..0..0..0..1..1..0. .1..0..1..0..0..0..0. .0..1..0..1..0..0..0
..1..0..0..0..0..0..0. .1..1..1..0..1..1..0. .0..0..1..1..0..0..0
..0..1..0..0..1..1..0. .1..0..0..0..0..0..0. .0..1..0..1..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2018
STATUS
approved