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 A199990 #18 Jul 27 2016 03:28:10 %S A199990 25,52,125,152,215,251,512,521,1125,1152,1215,1251,1512,1521,2115, %T A199990 2151,2511,5112,5121,5211,11125,11152,11215,11251,11512,11521,12115, %U A199990 12151,12511,15112,15121,15211,21115,21151,21511,25111,51112,51121,51211,52111,111125 %N A199990 Numbers with digital product = 10. %C A199990 Numbers with one 2, one 5 and zero or more 1s. %H A199990 Vincenzo Librandi, <a href="/A199990/b199990.txt">Table of n, a(n) for n = 1..100</a> %t A199990 Select[Range[200000], Times @@ IntegerDigits[#] == 10 &] (* _T. D. Noe_, Nov 16 2011 *) %Y A199990 Cf. A107696. %K A199990 nonn,base %O A199990 1,1 %A A199990 _Jaroslav Krizek_, Nov 13 2011