cp's OEIS Frontend

A088460 Lower twin primes with lower twin prime index.

%I A088460 #25 Jan 01 2020 10:28:27
%S A088460 11,29,137,239,641,1151,1931,2339,3851,4091,5639,6359,8231,9011,9431,
%T A088460 11351,12161,14561,15731,17837,20441,25931,26951,29207,33767,37781,
%U A088460 40847,42407,44381,46439,59471,60917,61979,65171,67427,80831,81929
%N A088460 Lower twin primes with lower twin prime index.
%H A088460 Amiram Eldar, <a href="/A088460/b088460.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..177 from Zak Seidov)
%F A088460 a(n) = A001359(A001359(n)).
%F A088460 a(n) == 5 (mod 6).
%e A088460 n=1 -> A001359(1)=3 -> A001359(3) = 11 = a(1).
%e A088460 n=2 -> A001359(2)=5 -> A001359(5) = 29 = a(2).
%e A088460 n=3 -> A001359(3)=11 -> A001359(11) = 137 = a(3).
%o A088460 (PARI) a(k) = { for(x1=1,k, print1(twinl(twinl(x1))", ") ) }
%o A088460 twinl(n) = { c=0; x=1; while(c<n, if(isprime(prime(x)+2),c++); x++; ); return(prime(x-1)) }
%Y A088460 Cf. A001359, A088463, A007097.
%K A088460 nonn
%O A088460 1,1
%A A088460 _Cino Hilliard_, Nov 12 2003
%E A088460 Edited and corrected by _David W. Wilson_, Oct 29 2006
%E A088460 Additional comments from _R. J. Mathar_, Oct 29 2006