OFFSET
0,2
COMMENTS
For a combinatorial formula see A112500, case k=5.
FORMULA
G.f.: 1/product((1-j*x)^(6-j), j=1..5) = 1/(((1-x)^5)*((1-2*x)^4)*((1-3*x)^3)*((1-4*x)^2)*(1-5*x)).
a(n) computable from partial fraction decomposition of g.f. Cf. A112503.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Oct 14 2005
STATUS
approved