A088460 Lower twin primes with lower twin prime index.

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

Author

Cino Hilliard, Nov 12 2003

Keywords

• nonn

Examples

			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).
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..177 from Zak Seidov)

Crossrefs

Cf. A001359, A088463, A007097.

Programs

PARI

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

Formula

a(n) = A001359(A001359(n)).

a(n) == 5 (mod 6).

Extensions

Edited and corrected by David W. Wilson, Oct 29 2006

Additional comments from R. J. Mathar, Oct 29 2006