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 A174229 #6 Jul 20 2017 01:53:49 %S A174229 2,6,8,14,21,38,39,51,54,65,68,78,80,93,104,107,114,117,119,125,135, %T A174229 137,146,147,152,153,158,159,167,186,206,225,243,246,248,257,258,269, %U A174229 270,272,278,284,290,291,306,311,317,321,323,324,369,372,387,390,399,404,410,414,425 %N A174229 Natural numbers n such that the concatenation n^3//1331, i.e., a cube and 11^3, is a prime number. %C A174229 See comments and references for A174213. %e A174229 2^3 = 8, 81331 = prime(7958) => a(1) = 2; %e A174229 6^3 = 216, 2161331 = prime(160048) => a(2) = 6. %o A174229 (PARI) isok(n) = isprime(eval(concat(Str(n^3), Str(1331)))); \\ _Michel Marcus_, Jul 20 2017 %Y A174229 Cf. A168327, A168417, A173836, A174213. %K A174229 base,nonn %O A174229 1,1 %A A174229 Eva-Maria Zschorn (e-m.zschorn(AT)zaschendorf.km3.de), Mar 13 2010 %E A174229 More terms from _Michel Marcus_, Jul 20 2017