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 A026862 #6 Jun 26 2022 05:05:31 %S A026862 1,7,37,178,823,3737,16833,75608,339610,1527944,6892210,31186533, %T A026862 141598200,645186895,2950261555,13538266219,62338173865,287993085103, %U A026862 1334712682675,6204513729392,28925212243136,135216169757852,633722949713612 %N A026862 T(2n,n+2), T given by A026747. %Y A026862 Cf. A026747. %K A026862 nonn %O A026862 2,2 %A A026862 _Clark Kimberling_