OFFSET
1,2
FORMULA
a(n)=sum(A132057(n, m), m=1..n), n>=1.
G.f.: (-1 + (1-49*x)^(-1/7))/(8-(1-49*x)^(-1/7)).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang Sep 14 2007
STATUS
approved