OFFSET
1,2
FORMULA
EXAMPLE
a(4) = 2^2*3*5 = 60 because A083785(4, 1) = 19940 = 2^2*5*997, (p^2*q*r) etc.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Amarnath Murthy, May 07 2003
EXTENSIONS
a(6)-a(7) from Jinyuan Wang, May 24 2020
STATUS
approved