1,8

Counts A025475 without 1=prime^0: a(n)=A085501(n)-1. - Reinhard Zumkeller, Jul 03 2003

Daniel Forgues, Table of n, a(n) for n=1,...,100000.

a(n) = A025528(n) - A000720(n) = A000720([n^(1/2)]) + A000720([n^(1/3)]) + ... . - Max Alekseyev, May 11 2009

Sequence in context: A102680 A025791 A237115 * A072292 A243282 A093390

Adjacent sequences: A069634 A069635 A069636 * A069638 A069639 A069640

nonn

Amarnath Murthy, Mar 27 2002

approved