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 A354533 #17 Aug 17 2022 10:15:18
%S A354533 2,6,14,62,254,1022,16382,262142,1048574,4294967294,
%T A354533 4611686018427387902,295147905179352825854,
%U A354533 1237940039285380274899124222,324518553658426726783156020576254,340282366920938463463374607431768211454,348449143727040986586495598010130648530942
%N A354533 Even terms in A354525.
%C A354533 Even numbers k such that for every prime factor p of k we have gpf(k+p) = p, gpf = A006530.
%C A354533 Even numbers k such that for every prime factor p of k, k+p is p-smooth.
%F A354533 a(n) = 2*(2^A354531(n) - 1).
%e A354533 See A354532.
%o A354533 (PARI) lista(nn,{lim=256},{lim_p=1<<32}) = for(n=1, nn, if(isA354531(n,lim,lim_p), print1(2*(2^n-1), ", "))) \\ See A354531 for the function isA354531
%Y A354533 Cf. A006530, A354525, A354531, A354532, A354534, A354536.
%K A354533 nonn,hard
%O A354533 1,1
%A A354533 _Jianing Song_, Aug 16 2022