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 A201054 #12 Jan 03 2017 18:21:18 %S A201054 15,51,115,511,1115,5111,11115,11151,11511,15111,51111,111115,111151, %T A201054 111511,115111,151111,1111115,1111511,1115111,1151111,1511111,5111111, %U A201054 11111115,11111151,11111511,11115111,11151111,11511111,15111111,51111111,111111115,111111151 %N A201054 Composite numbers whose product of digits is 5. %C A201054 Complement of A107691 with respect to A199985. Subsequence of A201018 (composite numbers whose multiplicative digital root is 5). %H A201054 Robert Israel, <a href="/A201054/b201054.txt">Table of n, a(n) for n = 1..10000</a> %e A201054 Number 115 is in sequence because 1*1*5=5. %p A201054 remove(isprime,[seq(seq((10^m-1)/9 + 4*10^j,j=0..m-1),m=1..10)]); # _Robert Israel_, Jan 03 2017 %Y A201054 Cf. A107691 (primes whose product of digits is 5), A199985 (numbers whose product of digits is 5). %K A201054 nonn,base %O A201054 1,1 %A A201054 _Jaroslav Krizek_, Nov 26 2011