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 A173654 #32 Jan 31 2025 11:12:27 %S A173654 2,3,5,13,4139,9291169663,40903307711993,11203575507020612767, %T A173654 117931192833682420978785454924465287516044205584738321794932303399537906411276617, %U A173654 7737619036672503610877049119781775747407075619250176633948790610185824044984615653215342833359 %N A173654 Primes in A001129 (= Iccanobif numbers). %F A173654 a(n)=A001129(A101759(n)). %o A173654 (PARI) a=0; b=1; for(n=2,999, ispseudoprime(b=A004086(a)+A004086(a=b))& print1(b", ")) %Y A173654 Cf. A000045, A005478, A001129, A101759. %K A173654 nonn,base %O A173654 1,1 %A A173654 _M. F. Hasler_, Jan 14 2011