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 A256877 #11 Jun 29 2019 03:55:17 %S A256877 8,10,114,120,195,264,286,400,408,450,456,500,650,744,750,780,792, %T A256877 1100,1170,1200,1804,1870,2802,2808,2850,2886,3144,3198,3600,4290, %U A256877 4524,5202,5280,5610,5655,5742,6000,6798,7020,7710,8010,8340,12804,13200,14820,14846,15210,19608,19610 %N A256877 Numbers divisible by prime(d) for each digit d in their base-7 representation, none of which may be zero. %C A256877 Base-7 analog of A256786. See A256874 - A256879 for the base-4, ..., base-9 analogs. %C A256877 See A256867 for a variant where divisibility by prime(d+1) is required instead. %o A256877 (PARI) is(n,b=7)=!for(i=1,#d=Set(digits(n,b)),(!d[i]||n%prime(d[i]))&&return) %Y A256877 Cf. A256786, A256874 - A256879, A256867, A256882 - A256884, A256865 - A256870. %K A256877 nonn,base %O A256877 1,1 %A A256877 _M. F. Hasler_, Apr 11 2015