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 A078207 #8 Jun 22 2025 17:35:12 %S A078207 1,6,384,2856,22727,188679,1612903,14084506,124999999,112359549631, %T A078207 1111234572418,1019369022515831,9409019496692991,873646201597158837, %U A078207 815363874644766139852,76437144029054504848414,719381682508917578872474,679393593475575516018040602 %N A078207 a(n) = A078206(n) / A000422(n). %e A078207 a(3) = 384 = 123264/321. %Y A078207 Cf. A078206. %K A078207 base,nonn %O A078207 1,2 %A A078207 _Amarnath Murthy_, Nov 22 2002 %E A078207 Edited and extended by _Max Alekseyev_, May 13 2009