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 A112072 #7 Feb 24 2024 01:13:06 %S A112072 7,9,15,17,31,33,39,41,55,57,63,65,79,81,87,89,103,105,111,113,127, %T A112072 129,135,137,151,153,159,161,175,177,183,185,199,201,207,209,223,225, %U A112072 231,233,247,249,255,257,271,273,279,281,295,297,303,305,319,321,327 %N A112072 Odd numbers n for which 3 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1. %Y A112072 Row 2 of A112070. a(n) = 2*A112062(n)+1. %K A112072 nonn %O A112072 1,1 %A A112072 _Antti Karttunen_, Aug 27 2005