A162250 Values of the form prime(prime(i)) with a prime digital sum.

3, 5, 11, 41, 67, 83, 157, 179, 191, 241, 283, 331, 353, 401, 461, 599, 739, 773, 797, 919, 991, 1031, 1217, 1297, 1433, 1471, 1499, 1523, 1723, 1741, 1787, 2027, 2063, 2081, 2221, 2269, 2351, 2609, 2647, 2683, 2719, 2803, 3019, 3109, 3169, 3259, 3299

Offset: 1

Author

Cino Hilliard, Jun 28 2009

Keywords

• nonn
• base

Examples

			Prime(prime(6)) = 41. 4+1=5, prime. So 41 is in the sequence.
		

Crossrefs

Intersection of A006450 and A028834.

Programs

PARI

sodip(n) = {
local(s=0,a,x,y,j,p);
for(x=1,n, p=prime(prime(x)); a=eval(Vec(Str(p))); y=sum(j=1,length(a),a[j]); if(isprime(y),print1(p","));)
}

Formula

{A006450(i) : A007953(A006450(i)) in A000040}. [From R. J. Mathar, Aug 03 2009]

Extensions

Definition rephrased by R. J. Mathar, Sep 11 2009