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 A152082 #6 Sep 01 2019 02:38:56 %S A152082 11,11,29,13,23,13,11,19,37,29,71,23,23,109,47,41,5,83,17,157,19,53, %T A152082 37,29,167,11,53,5,13,19,5,229,103,151,263,73,23,163,43,17,167,29,19, %U A152082 41,83,17,191,139,89,109,149,37,43,73,53,59,5,379,383,89,233,167 %N A152082 Largest prime divisors of the terms of A152080. %t A152082 f[n_] := FromDigits[IntegerDigits[n, 2], 4]; pmax[n_] := FactorInteger[n][[-1, 1]]; pmax /@ Select[Range[1300], CompositeQ[#] && PrimeQ[f[#]] &] (* _Amiram Eldar_, Aug 31 2019 *) %Y A152082 Cf. A000695, A152021, A152022, A152023, A152078, A152080. %K A152082 nonn %O A152082 1,1 %A A152082 _Vladimir Shevelev_, Nov 23 2008 %E A152082 More terms from _Amiram Eldar_, Aug 31 2019