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.

A190892 Numbers that can be written as a*b = c*d*e, where a, b, c, d, and e are distinct composite numbers.

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%I A190892 #18 Feb 13 2021 01:09:54
%S A190892 192,216,240,288,320,336,360,384,432,448,480,504,528,540,560,576,600,
%T A190892 624,640,648,672,704,720,756,768,792,800,810,816,832,840,864,880,896,
%U A190892 900,912,936,960,972,1000,1008,1024,1040,1056,1080,1088,1104,1120,1134
%N A190892 Numbers that can be written as a*b = c*d*e, where a, b, c, d, and e are distinct composite numbers.
%C A190892 Similar to A175340, but without the requirement that the composite numbers be consecutive. In this case, the k in A175340 can be taken to be 2.
%C A190892 Almost all numbers are in this sequence. Its complement has density O(n (log log n)^4/log n). - _Charles R Greathouse IV_, May 23 2011
%H A190892 T. D. Noe, <a href="/A190892/b190892.txt">Table of n, a(n) for n = 1..1000</a>
%e A190892 192 = 12*16 = 4*6*8.
%Y A190892 Cf. A162247 (all factorizations of numbers), A175340.
%Y A190892 A339245 is a subsequence.
%K A190892 nonn
%O A190892 1,1
%A A190892 _T. D. Noe_, May 23 2011