This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A277290 #77 Nov 19 2024 22:11:24 %S A277290 5,11,17,31,41,353,617,4787,5851,148091,637751 %N A277290 Prime-indexed primes p such that Lucas(p) is prime. %F A277290 a(n) = prime(A123677(n)). %F A277290 a(n) = prime(prime(A123678(n))). %e A277290 17 = A000040(7), with 7 itself being a prime, and A000032(17) = 3571, a prime, thus 17 is included in this sequence. %Y A277290 Cf. A000032, A000040, A123677, A123678. %Y A277290 Subsequence of A006450. See also A168033. %K A277290 nonn,hard,more %O A277290 1,1 %A A277290 _Bobby Jacobs_, Oct 21 2016