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 A212499 #11 Aug 20 2021 04:22:46
%S A212499 1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,101,102,103,104,105,
%T A212499 106,107,108,109,110,120,130,140,150,160,170,180,190,200,201,202,203,
%U A212499 204,205,206,207,208,209,210,220,230,240,250,260,270,280,290,300,301
%N A212499 Numbers k that divide the product of digits of k.
%C A212499 Every integer except zero divides zero.
%C A212499 A050720(2*n) is the number of terms of length n for n >= 2.
%H A212499 Arkadiusz Wesolowski, <a href="/A212499/b212499.txt">Table of n, a(n) for n = 1..1000</a>
%F A212499 a(n+9) = A011540(n+1).
%t A212499 Union[Range[9], Select[Range[10, 301], DigitCount[#, 10, 0] > 0 &]]
%t A212499 Select[Range[301], Divisible[Product[i, {i, IntegerDigits[#]}], #] &]
%Y A212499 Cf. A011540, A049101, A050720.
%K A212499 base,easy,nonn
%O A212499 1,2
%A A212499 _Arkadiusz Wesolowski_, May 19 2012