OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
PrimePi[NextPrime[#, -1]]&/@(6Prime[Range[60]]) (* Harvey P. Dale, Jun 18 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Henry Bottomley, Nov 13 2000
STATUS
approved