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 A076272 #13 Dec 09 2023 17:52:19 %S A076272 1,2,2,3,3,3,5,5,5,5,7,7,7,7,7,7,11,11,11,11,11,11,13,13,13,13,13,13, %T A076272 17,17,17,17,17,17,19,19,19,19,19,19,23,23,23,23,23,23,23,23,23,23,29, %U A076272 29,29,29,29,29,29,29,31,31,31,31,31,31,31,31,37,37,37,37,37,37,37,37 %N A076272 Largest prime factor of A076271(n): A006530(A076271(n)). %H A076272 T. D. Noe, <a href="/A076272/b076272.txt">Table of n, a(n) for n = 1..10000</a> %F A076272 a(n) = A076271(n+1) - A076271(n) for all n; %F A076272 a(A076273(k)+j) = A008578(k) for k>0 and 0 <= j < A075527(k-1). %t A076272 Differences[NestList[#+FactorInteger[#][[-1,1]]&,1,100]] (* _Paolo Xausa_, Dec 09 2023 *) %Y A076272 See A180101 for a variant. %K A076272 nonn %O A076272 1,2 %A A076272 _Reinhard Zumkeller_, Oct 04 2002