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 A091646 Number of primes less than 10^n having at least one digit 2. 9
 1, 3, 29, 352, 3357, 32393, 312424, 3014171, 29016211, 279171099, 2685272908, 25829666453, 248507003625, 2391688694305 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(2) = 3 because of the 25 primes less than 10^2, 3 have at least one digit 2. CROSSREFS a(n) + A091636(n) = A006880(n). Cf. A091644, A091645, A091647, A091705, A091706, A091707, A091708, A091709, A091710. Sequence in context: A001947 A323569 A049038 * A081506 A168127 A262640 Adjacent sequences:  A091643 A091644 A091645 * A091647 A091648 A091649 KEYWORD nonn,base AUTHOR Enoch Haga, Jan 30 2004 EXTENSIONS Edited and extended by Robert G. Wilson v, Feb 02 2004 3 more terms from Ryan Propper, Aug 20 2005 a(13) from Robert Price, Nov 11 2013 a(14) from Giovanni Resta, Jul 21 2015 STATUS approved

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Last modified February 17 18:37 EST 2020. Contains 332005 sequences. (Running on oeis4.)