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A088460
Lower twin primes with lower twin prime index.
3
11, 29, 137, 239, 641, 1151, 1931, 2339, 3851, 4091, 5639, 6359, 8231, 9011, 9431, 11351, 12161, 14561, 15731, 17837, 20441, 25931, 26951, 29207, 33767, 37781, 40847, 42407, 44381, 46439, 59471, 60917, 61979, 65171, 67427, 80831, 81929
OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..177 from Zak Seidov)
FORMULA
a(n) = A001359(A001359(n)).
a(n) == 5 (mod 6).
EXAMPLE
n=1 -> A001359(1)=3 -> A001359(3) = 11 = a(1).
n=2 -> A001359(2)=5 -> A001359(5) = 29 = a(2).
n=3 -> A001359(3)=11 -> A001359(11) = 137 = a(3).
PROG
(PARI) a(k) = { for(x1=1, k, print1(twinl(twinl(x1))", ") ) }
twinl(n) = { c=0; x=1; while(c<n, if(isprime(prime(x)+2), c++); x++; ); return(prime(x-1)) }
CROSSREFS
KEYWORD
nonn
AUTHOR
Cino Hilliard, Nov 12 2003
EXTENSIONS
Edited and corrected by David W. Wilson, Oct 29 2006
Additional comments from R. J. Mathar, Oct 29 2006
STATUS
approved