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 A256883 #14 Jun 29 2019 11:23:51 %S A256883 0,12,20,30,36,60,80,84,90,108,120,150,170,180,210,240,246,252,270, %T A256883 282,300,324,330,336,354,360,390,420,450,480,510,540,560,570,600,630, %U A256883 650,660,690,710,720,732,738,750,756,768,780,810,822,840,846,870,900,930,960,972,984,990,1002,1008,1020,1050,1056,1062,1080,1092,1110 %N A256883 Numbers divisible by prime(d+1) for each digit d of their base-3 representation. %C A256883 The base-3 variant of A256882, A256884, A256865, ..., A256870 in bases 2, ..., 10. %e A256883 0 is divisible by prime(0+1)=2. %e A256883 12 = 110_3 (in base 3), and is divisible by prime(1+1)=3 and by prime(0+1)=2. %o A256883 (PARI) is(n,b=3)=!for(i=1,#d=Set(digits(n,b)),n%prime(d[i]+1)&&return) %Y A256883 Cf. A256882 - A256884, A256865 - A256870, A256874 - A256879, A256786. %K A256883 nonn,base %O A256883 1,2 %A A256883 _M. F. Hasler_, Apr 11 2015