OFFSET
1,1
FORMULA
Sum_{n>=1} 1/a(n) = A275306. - Amiram Eldar, Aug 11 2020
MATHEMATICA
Table[2^FixedPoint[n+PrimePi[ # ]+1&, n], {n, 1, 30}]
PROG
(PARI) for(n=4, 100, if(!isprime(n), print1(2^n", "))) \\ Charles R Greathouse IV, Apr 09 2012
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Labos Elemer, Aug 05 2002
STATUS
approved