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 A007355 M2056 #24 Jul 25 2021 10:49:11 %S A007355 2,13,19,6173,6299,6353,6389,16057,16369,16427,16883,17167,17203, %T A007355 17257,18169,18517,18899,20353,20369,20593,20639,20693,20809,22037, %U A007355 22109,22153 %N A007355 Incorrect duplicate of A297408. %D A007355 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A007355 Robert G. Wilson v, <a href="/A005596/a005596.pdf">Letter to N. J. A. Sloane, Aug. 1993</a> %K A007355 dead %O A007355 1,1 %A A007355 _N. J. A. Sloane_, _Mira Bernstein_, _Robert G. Wilson v_