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.

A157911 Nonprimes whose digits are all cubes.

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%I A157911 #12 Apr 05 2025 18:24:38
%S A157911 0,1,8,10,18,80,81,88,100,108,110,111,118,180,188,800,801,808,810,818,
%T A157911 880,888,1000,1001,1008,1010,1011,1018,1080,1081,1088,1100,1101,1108,
%U A157911 1110,1111,1118,1180,1188,1800,1808,1810,1818,1880,1881,1888,8000,8001
%N A157911 Nonprimes whose digits are all cubes.
%C A157911 Cube digits are 0, 1 or 8 (i.e., 0=0*0*0, 1=1*1*1 or 8=2*2*2).
%H A157911 Harvey P. Dale, <a href="/A157911/b157911.txt">Table of n, a(n) for n = 1..2000</a>
%F A157911 A046031 SET-MINUS A000040. [_R. J. Mathar_, Mar 17 2009]
%t A157911 Select[FromDigits/@Tuples[{0,1,8},5],!PrimeQ[#]&] (* _Harvey P. Dale_, Apr 05 2025 *)
%Y A157911 Cf. A000578, A141468.
%K A157911 nonn,base,less
%O A157911 1,3
%A A157911 _Juri-Stepan Gerasimov_, Mar 09 2009
%E A157911 Numbers in the range 1100 to 1188 added by _R. J. Mathar_, Mar 17 2009