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 A078546 #11 Mar 18 2018 04:03:59 %S A078546 1,2,3,4,5,6,7,8,9,10,11,12,39,28,15,48,119,72,171,20,42,22,138,24,50, %T A078546 78,378,56,522,30,93,96,33,204,105,36,777,456,117,40,164,84,516,44, %U A078546 180,276,1316,48,1764,50,255,260,795,540,55,840,1995,1160,2655,60,366,186 %N A078546 LCM of n and its nonzero decimal digits. %F A078546 a(n) = lcm(n, A052429(n)). %e A078546 n=13: lcm(13,1,3) = 39 = a(13); a(x)=x if x is divisible by each nonzero digits, i.e., if x in A002796. %t A078546 lc[x_] := Apply[LCM, DeleteCases[IntegerDigits[x], 0]] Table[LCM[lc[w], w], {w, 1, 128}] NOT %o A078546 (PARI) lcnzd(n) = lcm(select(x->(x!=0), digits(n))); %o A078546 a(n) = lcm(n, lcnzd(n)); \\ _Michel Marcus_, Mar 18 2018 %Y A078546 Cf. A052429, A078547, A078548, A002796. %K A078546 nonn,base %O A078546 1,2 %A A078546 _Labos Elemer_, Dec 05 2002