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 A368732 #5 Jan 08 2024 14:30:28 %S A368732 2,3,5,7,11,13,17,23,29,31,41,43,47,59,67,73,79,83,97,101,109,127,137, %T A368732 139,149,157,163,167,179,191,199,211,227,233,241,257,269,271,277,283, %U A368732 293,313,331,347,353,367,373,389,401,421,431,439,443,449,461,467,487 %N A368732 Primes whose index is one, another prime number, or a semiprime. %t A368732 Prime/@Select[Range[100],PrimeOmega[#]<=2&] %Y A368732 For just primes we have A006450, products A076610, strict A302590. %Y A368732 These indices are A037143. %Y A368732 For just semiprimes we have A106349, products A339112, strict A340020. %Y A368732 Products of these primes are A368728, odd A368729, odd strict A340019. %Y A368732 Products of the complementary primes are A368833. %Y A368732 A000607 counts partitions into primes, with ones allowed A034891. %Y A368732 A001358 lists semiprimes, squarefree A006881. %Y A368732 A056239 adds up prime indices, row sums of A112798. %Y A368732 A101048 counts partitions into semiprimes. %Y A368732 A322551 lists primes of squarefree semiprime index. %Y A368732 Cf. A000040, A000720, A001222, A003963, A005117, A302242, A309356, A320628, A320911, A320912, A339113. %K A368732 nonn %O A368732 1,1 %A A368732 _Gus Wiseman_, Jan 08 2024