A088463 Upper twin primes of upper twin prime index.

31, 61, 181, 283, 811, 1279, 1999, 2551, 3931, 4159, 5659, 6553, 8389, 9241, 9463, 11551, 12253, 14629, 15889, 17923, 20509, 26113, 27109, 29401, 33829, 37993, 41179, 42571, 44623, 46681, 59671, 61333, 62143, 65449, 67759, 81019, 82009

Offset: 1

Author

Cino Hilliard, Nov 12 2003

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A006512, A088460, A007097.

Programs

PARI

a(k) = { for(x1=1,k, y1=twinu(twinu(x1)); print1(y1", ") ) }
twin(n) = { c=0; x=1; while(c
				

Formula

a(n) = A006512(A006512(n)).

a(n) == 1 (mod 6).

Extensions

Edited by David W. Wilson, Oct 29 2006