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 A300748 #13 Mar 12 2018 03:49:15 %S A300748 3,5,7,13,17,41,43,53,101,109,113,151,211,281,307,331,337,461,617,727, %T A300748 739,827,1033,1301,1481,1531,1723,1901,2161,2351,2381,2633,2647,2801, %U A300748 3371,3931,4933,5653,5743,6791,6917,7561,8059,9521,10369,11503,11551,12161,17579,17839,18433,20593,21061,23581,26731,30241 %N A300748 Least prime divisor of A300629(n). %C A300748 For m > 2, A135720(m) = A083876(m-1) if and only if a(n) = prime(m). %H A300748 Max Alekseyev, <a href="/A300748/b300748.txt">Table of n, a(n) for n = 1..138</a> %F A300748 a(n) = A020639(A300629(n)). %Y A300748 Cf. A002997, A020639, A083876, A285549, A300629. %K A300748 nonn %O A300748 1,1 %A A300748 _Max Alekseyev_, Mar 11 2018