OFFSET
1,1
COMMENTS
Column 5 of A203291
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..145
FORMULA
Empirical: a(n) = 4*a(n-1) -4*a(n-2) -2*a(n-3) +3*a(n-4) +7*a(n-6) -10*a(n-7) +a(n-8) -a(n-10) +10*a(n-11) -7*a(n-12) -3*a(n-14) +2*a(n-15) +4*a(n-16) -4*a(n-17) +a(n-18)
EXAMPLE
Some solutions for n=3
.-5...-3...-3...-3...-5...-5...-3...-5...-5...-3...-4...-5...-4...-5...-5...-3
.-4...-1...-2...-3...-4...-5...-2....0...-2...-3...-2...-4...-4...-5...-3...-3
.-2...-1....0...-3...-2...-4...-2....0...-1...-1...-1...-1...-3...-2...-2...-2
..1....1....0....2....3....4....1....0....2....1....2....1....3....4....2....2
..5....2....1....2....3....5....1....0....3....2....2....4....4....4....3....3
..5....2....4....5....5....5....5....5....3....4....3....5....4....4....5....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 31 2011
STATUS
approved