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 A038525 #15 Jan 17 2021 11:10:16 %S A038525 3,4,5,7,8,11,13,17,23,24,28,29,34,43,47,50,52,58,71,77,83,131,137, %T A038525 163,197,235,238,319,359,431,433,449,509,569,570,571,669,949,958,1211, %U A038525 1305 %N A038525 Numbers n with property that either the n-th Fibonacci number is prime or the concatenation of its prime factors is prime. %C A038525 Up to and including a(17)=52, the sequence are the n such that A038526(n) is prime. Extrapolating, one would expect it to continue 83,86,93,95,131,137,139,174,182,... - _R. J. Mathar_, Oct 12 2007 %Y A038525 Cf. A000045, A037276, A038526. %K A038525 nonn,base,more %O A038525 1,1 %A A038525 _Jeff Burch_ %E A038525 More terms from _Thomas Baruchel_, Oct 11 2003 %E A038525 More terms from _Sean A. Irvine_, Jan 16 2021