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A025471 Position of 5^n among the powers of primes (A000961). 0
1, 5, 15, 43, 137, 483, 1881, 7772, 33292, 146014, 650688, 2935909 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

FORMULA

a(n) = A065515(5^n). - Michel Marcus, Mar 24 2013

PROG

(PARI) lista(n) = {p5max = 5^n; pos = 1; print1(pos, ", "); for (i=2, p5max, if (omega(i) == 1, pos++; if (factor(i)[1, 1] == 5, print1(pos, ", "); ); ); ); } \\ Michel Marcus, Mar 24 2013

CROSSREFS

Sequence in context: A032193 A178965 A005665 * A064453 A059251 A295179

Adjacent sequences:  A025468 A025469 A025470 * A025472 A025473 A025474

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 26 07:44 EDT 2019. Contains 323579 sequences. (Running on oeis4.)