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 A016112 #6 Mar 30 2012 17:30:18 %S A016112 101,11,211,13,41,151,23,17,181,19,251,0,43,0,127,53,281,0,29,0,541, %T A016112 37,1,0,83,11551,1,139,47,0,523,0,1481,1,1,157,149,0,1,1,12451,0,67,0, %U A016112 1,59,1,0,283,11177,2551,1,1,0,239,1,1187,1,1,0,1453,0,1,79,881,1 %N A016112 Smallest prime whose digit product is n, if possible; otherwise 0 if n is a prime > 7 or 1 if n has a prime factor > 7. %D A016112 Charles W. Trigg, Products of the Digits of Primes, J. Rec. Math., Vol. 22 #4, pp. 247-248, 1990 %K A016112 nonn,base %O A016112 0,1 %A A016112 _Robert G. Wilson v_