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 A087408 #8 Mar 20 2015 03:26:29
%S A087408 51,1,52,2,53,3,54,4,55,5,56,6,57,7,58,8,59,9,51,0,10,51,10,11,51,20,
%T A087408 12,51,30,13,51,40,14,51,50,15,51,60,16,51,70,17,51,80,18,51,90,19,52,
%U A087408 0,20,52,10,21,52,20,22,52,30,23,52,40,24,52,50,25,52,60,26,52,70,27,52,80
%N A087408 Multiples of 5 with digits grouped in pairs and leading zeros omitted.
%t A087408 FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 5n, {n, 1, 60}]]], 2] (* _Robert G. Wilson v_ *)
%Y A087408 Cf. A008587, A059805, A087406, A060936, A087407, A087409, A087075, A087410, A087411.
%K A087408 nonn,easy,base
%O A087408 1,1
%A A087408 _N. J. A. Sloane_, Oct 19 2003
%E A087408 More terms from _Ray Chandler_, Oct 20 2003