cp's OEIS Frontend

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.

A110442 Least colossally abundant number c with sigma(c)/c >= n.

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%I A110442 #8 Aug 26 2025 04:58:38
%S A110442 6,120,55440,367567200,288807105787200,1970992304700453905270400,
%T A110442 46015447651610234928592313897306120347488000,
%U A110442 20945137389024582113645213620899991935836129981347124754955196200225728000
%N A110442 Least colossally abundant number c with sigma(c)/c >= n.
%C A110442 See A110443 for the indices of these numbers in A004490. A073751 contains a program for quickly computing colossally abundant numbers.
%H A110442 Amiram Eldar, <a href="/A110442/b110442.txt">Table of n, a(n) for n = 2..13</a>
%Y A110442 Cf. A000203 (sigma), A004490 (colossally abundant numbers), A023199 (least number k such that sigma(k)/k >= n), A073751, A110443.
%K A110442 nonn,changed
%O A110442 2,1
%A A110442 _T. D. Noe_, Jul 20 2005