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 A141301 #30 Jul 14 2019 17:22:08 %S A141301 61,109,181,229,241,349,409,421,541,601,661,709,769,829,1009,1021, %T A141301 1069,1129,1201,1249,1321,1381,1429,1489,1549,1609,1621,1669,1741, %U A141301 1789,1801,1861,2029,2089,2161,2221,2269,2281,2341,2389,2521,2689,2749,3001,3049,3061,3109,3121,3169,3181 %N A141301 Duplicate of A107152. %K A141301 dead %O A141301 1,1