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 A280249 #7 Dec 31 2016 02:07:07 %S A280249 1,2,3,4,5,6,7,8,9,25,26,27,35,28,29,45,37,38,55,39,47,56,48,57,49,58, %T A280249 67,59,68,77,255,69,78,256,79,88,257,89,355,258,99,267,259,268,277, %U A280249 455,357,269,278,358,555,279,288,359,457,289,377,556,458,299,378,557,459,379,388,477,558,567,389,478,559,568,399,577,2555,479 %N A280249 a(n) = smallest k with digit product A002473(n). %C A280249 A007954(a(n)) = A002473(n). %H A280249 David W. Wilson, <a href="/A280249/b280249.txt">Table of n, a(n) for n = 1..10000</a> %Y A280249 Cf. A002473, A007954. %K A280249 base,nonn %O A280249 1,2 %A A280249 _David W. Wilson_, Dec 29 2016