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.

A271443 Earliest start of a run of n numbers divisible by a cube larger than one.

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%I A271443 #21 Dec 19 2019 12:34:32
%S A271443 8,80,1375,22624,18035622,4379776620,1204244328624,2604639091138248,
%T A271443 2604639091138248
%N A271443 Earliest start of a run of n numbers divisible by a cube larger than one.
%C A271443 a(5)-a(7) were found by _Donovan Johnson_.
%H A271443 Jean-Marie De Koninck, <a href="https://bookstore.ams.org/mbk-64/83">Those Fascinating Numbers</a>, Amer. Math. Soc., (2009), page 63.
%e A271443 a(9) = 2604639091138248 and the following 8 numbers are divisible by 2^3, 11^3, 5^3, 17^3, 7^3, 13^3, 3^3, 19^3, and 2^4, respectively.
%t A271443 a[n_] := Block[{k=1, c=0}, While[ c<n, If[ Max[ Last /@ FactorInteger[ ++k]] < 3, c=0, c++]];  k-n+1]; Array[a, 4]
%Y A271443 Cf. A046099, A068140, A122692, A271444, A271445, A271446, A271447.
%Y A271443 Cf. A045882, A330480, A330481, A330482, A330486, A330483, A330484, A330485.
%K A271443 nonn,more
%O A271443 1,1
%A A271443 _Giovanni Resta_, Apr 23 2016