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 A342298 #7 Mar 10 2021 12:28:21 %S A342298 2,25,931,504455,67539587599,585462196329239562271, %T A342298 21690980800898420269408456526391711768639, %U A342298 14792097944732868603877386771665610972834204784426907551800717772696470224928895 %N A342298 a(n) is the greatest k such that A342263(k) = n. %H A342298 Rémy Sigrist, <a href="/A342298/a342298.gp.txt">PARI program for A342298</a> %F A342298 A070939(a(n)) = A052944(n+1). %o A342298 (PARI) See Links section. %Y A342298 Cf. A052944, A070939, A247241, A342263. %K A342298 nonn,base %O A342298 0,1 %A A342298 _Rémy Sigrist_, Mar 07 2021