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 A179530 #4 Mar 30 2012 18:51:06
%S A179530 7,1,17,19,489,116859
%N A179530 Smallest of 12 consecutive numbers containing exactly n terms of A083207.
%C A179530 A179529(a(n)) = n and A179529(m) <> n for m < a(n);
%C A179530 SUM(A179527(k): a(n) <= k < a(n)+12) = n;
%C A179530 by definition the sequence is finite with at most 12 terms.
%H A179530 Peter Luschny, <a href="http://www.luschny.de/math/seq/ZumkellerNumbers.html">Zumkeller Numbers</a>
%e A179530 a(3)=17: A179529(17) = #{20,24,28} = #{A083207(3),A083207(4),A083207(5)} = 3;
%e A179530 a(4)=19: A179529(19) = #{20,24,28,30} = #{A083207(3),A083207(4),A083207(5),A083207(6)} = 4;
%e A179530 a(5)=489: A179529(489) = #{490,492,496,498,500} = #{A083207(107),A083207(108),A083207(109),A083207(110),A083207(111)} = 5.
%e A179530 For a(6), the six Zumkeller numbers are 116860, 116862, 116864, 116865, 116868, and 116870. [From _T. D. Noe_, Aug 22 2010]
%Y A179530 Cf. A179528.
%K A179530 fini,more,nonn
%O A179530 1,1
%A A179530 _Reinhard Zumkeller_, Jul 19 2010
%E A179530 a(6) from _T. D. Noe_, Aug 22 2010