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The number j such that 5 divides prime(k)-prime(j), where k(n)=A205684(n).
5

%I #5 Mar 30 2012 18:58:11

%S 1,2,1,4,2,6,8,5,1,4,7,5,11,2,6,9,1,4,7,12,2,6,9,14,8,10,5,11,13,1,4,

%T 7,12,15,5,11,13,18,2,6,9,14,16,8,10,17,2,6,9,14,16,21,8,10,17,22,1,4,

%U 7,12,15,19,5,11,13,18,20,2,6,9,14,16,21,23,1,4,7,12,15,19

%N The number j such that 5 divides prime(k)-prime(j), where k(n)=A205684(n).

%C For a guide to related sequences, see A205558.

%e (See the example at A205684.)

%t (See the program at A205684.)

%Y Cf. A205684, A205558.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jan 30 2012