2,1

Harry J. Smith, Table of n, a(n) for n = 2..10000

H. J. Smith, XPCalc - Extra Precision Floating-Point Calculator. [From Harry J. Smith, Dec 31 2008]

Eric Weisstein's World of Mathematics, Prime Counting Function

a(13) = 0 because R(13) = 5.504 and Pi(13) = 6 [From Harry J. Smith, Dec 31 2008]

(XPCalc) a=Round(Ri(n)-Pi(n)) [From Harry J. Smith, Dec 31 2008]

Cf. A052435.

Sequence in context: A014057 A015689 A104124 * A015241 A014025 A156297

Adjacent sequences: A052431 A052432 A052433 * A052435 A052436 A052437

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Eric W. Weisstein

Corrected 6 terms, a(2), a(7), a(10), a(13), a(20) and a(48). Each was made 1 larger. Also gave an example for a(13) and a program for computing a(n). Harry J. Smith, Dec 31 2008

approved