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 A342904 #7 Apr 03 2021 00:23:28 %S A342904 5,27,251,2673,1375298099,106426514 %N A342904 Erroneous version of A230563. %C A342904 Included in accordance with OEIS policy of listing published but incorrect sequences to serve as pointers to the correct versions. %H A342904 R. Alter, <a href="https://doi.org/10.1007/BFb0096461">Computations and generalizations on a remark of Ramanujan</a>, pp. 182-196 of "Analytic Number Theory (Philadelphia, 1980)", ed. M. I. Knopp, Lect. Notes Math., Vol. 899, 1981. The value given in Table 5 is wrong. %K A342904 dead %O A342904 1,1