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 A336879 #9 Aug 06 2020 16:03:22 %S A336879 0,1,2,3,1,4,2,5,6,3,2,7,4,8,5,9,4,3,6,1,7,6,8,4,9,8,2,2,10,5,9,12,8, %T A336879 3,6,14,3,12,2,16,4,4,7,12,10,18,15,4,5,18,6,16,6,12,5,21,6,15,9,4,4, %U A336879 20,24,3,8,6,8,14,27,9,20,24,1,18,8,9,10,6,16 %N A336879 a(n) is the product of the decimal digits of A336876(n). %H A336879 Rémy Sigrist, <a href="/A336879/b336879.txt">Table of n, a(n) for n = 1..10000</a> %H A336879 Rémy Sigrist, <a href="/A336879/a336879.txt">C program for A336879</a> %F A336879 a(n) = A007954(A336876(n)). %F A336879 a(n) * A336876(n) = A336826(n). %e A336879 For n = 26: %e A336879 - A336876(26) = 24, %e A336879 - so a(26) = 2*4 = 8. %o A336879 (C) See Links section. %Y A336879 Cf. A007954, A336826, A336876. %K A336879 nonn,look,base %O A336879 1,3 %A A336879 _Rémy Sigrist_, Aug 06 2020