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A108956 Floor(R(2n) - R(n)). 0
1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..84.

FORMULA

R(x) = Riemann Pi(x) approximation

PROG

(PARI) p(n) = for(x=2, n, y=R(2*x)-R(x); print1(floor(y)", ")) R(x) = \ Riemann approx of Pi(x) { local(j); round(sum(j=1, 200, moebius(j)*Li(x^(1/j))/j)) }

CROSSREFS

Sequence in context: A052146 A097882 A108955 * A289133 A135297 A176146

Adjacent sequences:  A108953 A108954 A108955 * A108957 A108958 A108959

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Jul 22 2005

STATUS

approved

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Last modified May 19 20:41 EDT 2019. Contains 323410 sequences. (Running on oeis4.)