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A088463
Upper twin primes of upper twin prime index.
3
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
1,1
LINKS
FORMULA
a(n) = A006512(A006512(n)).
a(n) == 1 (mod 6).
PROG
(PARI) a(k) = { for(x1=1, k, y1=twinu(twinu(x1)); print1(y1", ") ) }
twin(n) = { c=0; x=1; while(c<n, if(isprime(prime(x)+2), c++); x++; ); return(prime(x)) }
CROSSREFS
KEYWORD
nonn
AUTHOR
Cino Hilliard, Nov 12 2003
EXTENSIONS
Edited by David W. Wilson, Oct 29 2006
STATUS
approved