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 A171867 #12 Sep 12 2019 15:01:00 %S A171867 1,3,5,10,24,30,35,41,52,84,125,152,162,208,212,288,303,364,436,442, %T A171867 487,568,578,705,726,981,1141,1150,1238,1395,1620,1806,1834,2040,2089, %U A171867 2103,2174,2216,2451,2714,3050,3221,3461,3923,3966,4080,4348,4619,4626,4771 %N A171867 Records in A181391 (positions). %H A171867 Benjamin Chaffin, <a href="/A171867/b171867.txt">Table of n, a(n) for n = 1..13808</a> (first 345 terms from N. J. A. Sloane) %Y A171867 Cf. A181391 (Van Eck's sequence). %K A171867 nonn %O A171867 1,2 %A A171867 _N. J. A. Sloane_, Oct 17 2010