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A090473 Primes in A047783. 1
2, 2, 3, 5, 5, 7, 7, 7, 11, 11, 11, 13, 13, 13, 13, 17, 17, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 29, 29, 29, 29, 29, 31, 31, 31, 31, 37, 37, 37, 37, 37, 41, 41, 41, 41, 41, 43, 43, 43, 43, 43, 47, 47, 47, 47, 47, 53, 53, 53, 53, 53, 53, 59, 59, 59, 59, 59, 59, 61, 61, 61, 61 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The logarithmic integral can be computed in PARI: Li(x) = -eint1(log(1/x)).

LINKS

Table of n, a(n) for n=1..72.

PROG

(PARI) lip(n) = forstep(x=1, n, 1, y=floor(-eint1(log(1/x))); if(isprime(y), print1(y", ")))

CROSSREFS

Cf. A047783.

Sequence in context: A131429 A105605 A237710 * A113636 A262463 A151800

Adjacent sequences:  A090470 A090471 A090472 * A090474 A090475 A090476

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Feb 01 2004

EXTENSIONS

Edited by David Wasserman, Nov 16 2005

STATUS

approved

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Last modified October 27 23:26 EDT 2020. Contains 338047 sequences. (Running on oeis4.)