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 A212612 #11 Jun 06 2012 18:05:58 %S A212612 819,6975,40131,154791,448335,721525,1401543,1680705,2876211,10590125, %T A212612 11208375,12525435,13934375,56162575,83479977,90190625,102018125, %U A212612 262840851,730113475,788522553,1280965413,1581644246,1601338375,1841695625 %N A212612 The larger companion to the primitive deficient numbers in A212611. %C A212612 These numbers are in order; their companions are not. %C A212612 a(25) > 2*10^9. - _Donovan Johnson_, Jun 06 2012 %K A212612 nonn,more %O A212612 1,1 %A A212612 _T. D. Noe_, May 23 2012 %E A212612 a(10)-a(18) from _Donovan Johnson_, May 24 2012 %E A212612 a(19)-a(24) from _Donovan Johnson_, Jun 06 2012