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%I #21 Mar 15 2019 21:58:14
%S 1,1,1,1,0,1,1,0,2,1,1,2,0,1,1,2,1,0,1,1,2,1,1,0,1,0,1,1,0,1,2,1,2,1,
%T 0,1,2,1,1,2,1,0,0,1,1,0,1,3,3,2,3,2,1,2,3,2,1,2,3,1,2,2,2,1,2,2,2,3,
%U 2,1,3,2,2,3,2,2,1,2,0,0,0,1,1,2,1,1,0,2,0,1,1,1,1,0,0,2,1,2,3,1,2,3,2,1,2
%N Number of prime digits in n-th prime.
%C The prime A000040(n) is in A034844 iff a(n) = 0; it is in A179336 iff a(n) > 0. [_Reinhard Zumkeller_, Jul 11 2010, corrected by _M. F. Hasler_, Aug 27 2012]
%H Reinhard Zumkeller, <a href="/A109066/b109066.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = A193238(A000040(n)). [_Reinhard Zumkeller_, Jul 19 2011]
%t a[n_]:=Count[PrimeQ/@IntegerDigits[Prime[n]], True]
%o (PARI) a(n) = vecsum(apply(x->isprime(x), digits(prime(n)))); \\ _Michel Marcus_, Mar 15 2019
%Y Cf. A019546 (primes whose digits are primes), A092629 (number of prime digits is nonprime), A104250 (sum of prime digits of n-th prime).
%Y Cf. A000040, A034844, A179336.
%K base,nonn
%O 1,9
%A _Zak Seidov_, Jun 17 2005
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