1,2

C. D. Pruitt, A Theorem & Proof on the Density of Primes Utilizing Primorials [Broken link?]

a=1; Table[a=a*Prime[n]; PrimePi[a], {n, 1, 13}]

Cf. A002110.

Sequence in context: A074508 A058112 A020008 this_sequence A092429 A005651 A105748

Adjacent sequences: A000846 A000847 A000848 this_sequence A000850 A000851 A000852

nonn,hard

gandalf(AT)hrn.office.ssi.net (James D. Ausfahl)

More terms from David W. Wilson (davidwwilson(AT)comcast.net); last 4 terms from Paul.Zimmermann(AT)loria.fr (Paul Zimmermann).