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 A364704 #15 Aug 04 2023 08:17:43 %S A364704 1,1,1,1,36721681,36721681 %N A364704 Smallest initial number k of n consecutive numbers satisfying sigma(k) < sigma(k+1) < ... < sigma(k+n-1). %C A364704 a(7) > 5*10^10. (Calculated using the b-file in A028965.) %o A364704 (PARI) b(n) = my(k=n); while(sigma(k)<sigma(k+1), k++); k-n+1; %o A364704 a(n) = my(k=1); while(b(k)<n, k++); k; %Y A364704 Cf. A000203, A075028, A285893, A364680. %Y A364704 Cf. A028965, A053224, A364659, A364662. %K A364704 nonn,more,hard %O A364704 1,5 %A A364704 _Seiichi Manyama_, Aug 03 2023