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 A081986 #6 Dec 05 2013 19:56:03
%S A081986 10,4,2,10,10,10,10,100,34,12,9,30,9,105,30,25,2,100,12,52,27,100,34,
%T A081986 35,100,112,510,210,59,187,230,600,202,205,220,302,102,135,41,225,
%U A081986 1005,144,130,1055,352,355,180,385,126,51,65,175,1000,170,520,234,59,34,1000,525
%N A081986 a(n) = {A081984(n)-1}/d, where d is the product of nonzero digits of A081984(n).
%e A081986 A081984(11) = 127 hence a(11) = 126/(1*2*7) = 9.
%Y A081986 Cf. A081981, A081982, A081983, A081984, A081987.
%K A081986 base,nonn
%O A081986 1,1
%A A081986 _Amarnath Murthy_, Apr 04 2003
%E A081986 More terms from _Ray Chandler_, Oct 29 2003