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 A168540 #4 May 10 2013 11:21:36 %S A168540 1,2,4,5,7,13,17,25,29,32,44,55,61,76,77,80,92,106,109,112,116,121, %T A168540 124,136,137,142,143,149,152,154,158,161,169,170,178,190,191,196,200, %U A168540 208,221,223,224,227,230,245,254,259,260,262 %N A168540 Natural numbers n for which 100n^3 + 27 is prime. %C A168540 It is conjectured that sequence is infinite. %D A168540 Leonard E. Dickson: History of the Theory of numbers, vol. I, Dover Publications 2005 %D A168540 Friedhelm Padberg, Elementare Zahlentheorie, Spektrum Akademischer Verlag, 2. Auflage 1991 %e A168540 (1) 3^3+10^2*1^3=127=prime(31) gives a(1)=1 %e A168540 (2) 3^3+10^2*2^3=827=prime(144) gives a(2)=2 %e A168540 (3) 3^3+10^2*13^3=219727=prime(19588) gives a(6)=13 %t A168540 Select[Range[300],PrimeQ[100#^3+27]&] (* _Harvey P. Dale_, May 10 2013 *) %Y A168540 Cf. A168147 Primes of the form p = 1 + 10*n^3 for a natural number n %Y A168540 Cf. A168327 Primes of concatenated form p= "1 n^3" %Y A168540 Cf. A168375 Natural numbers n for which the concatenation p= "1 n^3"is prime %K A168540 nonn %O A168540 1,2 %A A168540 Eva-Maria Zschorn (e-m.zschorn(AT)zaschendorf.km3.de), Nov 29 2009 %E A168540 Edited by _Charles R Greathouse IV_, Apr 28 2010