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 A364680 #10 Aug 02 2023 11:45:35 %S A364680 1,4,44,44,20021154,20021154 %N A364680 Smallest initial number k of n consecutive numbers satisfying sigma(k) > sigma(k+1) > ... > sigma(k+n-1). %o A364680 (PARI) b(n) = my(k=n); while(sigma(k)>sigma(k+1), k++); k-n+1; %o A364680 a(n) = my(k=1); while(b(k)<n, k++); k; %Y A364680 Cf. A000203, A075029. %Y A364680 Cf. A050944, A050945, A053226, A364657. %K A364680 nonn,more %O A364680 1,2 %A A364680 _Seiichi Manyama_, Aug 02 2023