A108293 Consider primes p and q such that p = 2^k + 27 and q = 2^(k+1) + 27 for some k; sequence gives values of q.

31, 59, 16411, 2199023255579, 21778071482940061661655974875633165533211

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Prog

(PARI) g(m, n, b) = { for(x=0, n, y=m+b^x+b%2; z=m+b^(x+1)+b%2; if(isprime(y)&isprime(z), print1(z", ") ) ) }

Crossrefs

Cf. A108280.

Sequence in context: A139954 A153636 A109840 * A316349 A063339 A228541

Adjacent sequences: A108290 A108291 A108292 * A108294 A108295 A108296

Keyword

nonn

Author

Cino Hilliard, Jun 29 2005

Status

approved