A098225 -id:A098225

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Search: a098225 -id:a098225

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A098226

Number of primes <= 10^n which have repeated decimal digits.

+10
2

0, 1, 47, 598, 6432, 65099, 617230, 5623596, 50564448, 454769425, 4117771727, 37607628932, 346065253753, 3204941467716, 29844570139583, 279238340750839, 2623557157371147, 24739954287457774, 234057667276061521, 2220819602560635754, 21127269486018448842

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..21.

FORMULA

For n>=10 a(n) = A006880(n) - 283086 because the total number of distinct-digit primes equals 283086. See A098224.

CROSSREFS

Cf. A006880, A006879, A098224, A098225, A098227.

KEYWORD

nonn,base

AUTHOR

Labos Elemer, Oct 25 2004

EXTENSIONS

a(13)-a(21) from Giovanni Resta, Oct 29 2019

STATUS

approved

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