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 A204045 #10 Oct 30 2018 10:31:02 %S A204045 1023456789,1023456789,1023748965,1023456789,1024693578,1023465897, %T A204045 1023547986,1023794658,1023674985 %N A204045 Smallest integer m such that both m and n*m are decimal pandigital numbers (A050278). %C A204045 Corresponding indices of a(n) in A050278 are 1, 1, 378, 1, 1057, 28, 132, 459, 294. %C A204045 Note that a(1)=a(2)=a(4)=A050278(1). %Y A204045 Cf. A050278, A203987. %K A204045 nonn,base,fini,full %O A204045 1,1 %A A204045 _Zak Seidov_, Jan 09 2012