OFFSET
1,1
COMMENTS
Row 7 of A209115.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) - 7*a(n-2) + 9*a(n-3) - 11*a(n-4) + 12*a(n-5) - 12*a(n-6) + 10*a(n-7) - 6*a(n-8) + 3*a(n-9) - 3*a(n-11) + 6*a(n-12) - 10*a(n-13) + 12*a(n-14) - 12*a(n-15) + 11*a(n-16) - 9*a(n-17) + 7*a(n-18) - 4*a(n-19) + a(n-20) for n > 22.
EXAMPLE
Some solutions for n=6:
-5 -6 -5 -4 -6 -6 -5 -6 -4 -5 -4 -5 -4 -6 -6 -5
-3 -3 -1 -2 -5 2 -2 6 -3 -5 -2 6 -1 2 3 -1
-5 -2 -3 -1 -1 -2 -4 -3 -1 -4 -4 -4 -2 -1 -1 -2
-3 -4 0 -3 4 2 -2 -5 -1 4 6 -4 0 -1 4 6
4 3 -2 6 0 4 2 -2 5 3 1 3 5 6 1 5
6 6 6 0 3 -5 6 6 0 1 2 0 -1 -6 2 0
6 6 5 4 5 5 5 4 4 6 1 4 3 6 -3 -3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2012
STATUS
approved