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 A167726 #9 Aug 10 2021 10:33:29
%S A167726 27,729,12167,19683,68921,148877,185193,328509,658503,704969,970299,
%T A167726 1030301,1367631,2248091,3581577,5000211,9663597,15813251,17779581,
%U A167726 19034163
%N A167726 Cubes that become a prime number when prefixed with a 2.
%C A167726 Subsequence of cubes of A032665. - _Michel Marcus_, Jun 22 2016
%H A167726 G. C. Greubel, <a href="/A167726/b167726.txt">Table of n, a(n) for n = 1..10000</a>
%t A167726 Select[Range[1, 500000, 2]^3, PrimeQ[FromDigits[Join[{2}, IntegerDigits[#]]]] &] (* _G. C. Greubel_, Jun 21 2016 *)
%Y A167726 Cf. A032665.
%K A167726 base,nonn
%O A167726 1,1
%A A167726 _Claudio Meller_, Nov 10 2009