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1,2
Computed by T. D. Noe, Dec 19 2003.
Table of n, a(n) for n=1..10.
Eric Weisstein's World of Mathematics, Modular Prime Counting Function
a(n) = A006880(n) - 2 - A091115(n). - R. J. Mathar, Jul 20 2007
Cf. A091118. Equals -1 + A091116.
Sequence in context: A225785 A098206 A104911 * A243248 A046023 A183721
Adjacent sequences: A091116 A091117 A091118 * A091120 A091121 A091122
nonn,more
Eric W. Weisstein, Dec 19 2003
a(10) from Robert G. Wilson v, Dec 22 2003
approved