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A104251 Sum of nonprime digits of n-th prime. 3

%I

%S 0,0,0,0,2,1,1,10,0,9,1,0,5,4,4,0,9,7,6,1,0,9,8,17,9,2,1,1,10,2,1,2,1,

%T 10,14,2,1,7,7,1,10,10,11,10,10,19,2,0,0,9,0,9,5,1,0,6,15,1,0,9,8,9,0,

%U 2,1,1,1,0,4,13,0,9,6,0,9,8,17,9,5,13,14,5,5,4,13,8,17,4,11,10,10,13,12

%N Sum of nonprime digits of n-th prime.

%F a(n)=A007605(n)-A104250(n)

%e a(6)=1 because sum of composie (nonprime) digits of Prime[6]=13 is 1.

%Y Sum of prime digits (2, 3, 5, 7) of n-th prime: A104250. Primes: A000040, sum of digits of primes: A007605.

%K nonn,base

%O 1,5

%A _Zak Seidov_, Feb 26 2005

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Last modified October 20 11:31 EDT 2018. Contains 316379 sequences. (Running on oeis4.)