OFFSET
1,2
COMMENTS
Diagonal of A190100.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..103
FORMULA
Empirical: a(n) = a(n-1) +2*a(n-2) -2*a(n-3) +a(n-5) -3*a(n-6) +3*a(n-8) -a(n-9) +2*a(n-11) -2*a(n-12) -a(n-13) +a(n-14).
Empirical g.f.: 8*x^2*(2 + 2*x + 2*x^2 + 2*x^3 + x^4)*(1 + 2*x + 2*x^2 + 2*x^3 + 2*x^4) / ((1 - x)^5*(1 + x)^3*(1 + x^2)*(1 + x + x^2 + x^3 + x^4)). - Colin Barker, May 04 2018
EXAMPLE
Some solutions for n=5:
3 0 3 2 5 0 2 0 1 2 5 5 3 5 3 0 2 3 0 4
1 0 2 1 3 0 1 1 1 0 1 5 2 4 2 1 0 3 1 5
3 1 5 0 5 1 4 2 5 2 5 3 5 3 5 2 2 2 2 2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 04 2011
STATUS
approved