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 A140628 #20 Aug 05 2014 14:16:32 %S A140628 71,239,311,599,719,1151,1319,1439,1511,1559,1871,2111,2879,2999,3359, %T A140628 3719,3911,4079,4271,4751,4871,5039,5279,5591,5639,6311,6719,6791, %U A140628 6959,7079,8039,8951,8999,9239,9431,9479,9551,9719,9791,9839,10151 %N A140628 Primes of the form 39x^2+6xy+71y^2. %C A140628 Discriminant=-11040. Also primes of the form 71x^2+70xy+95y^2. %C A140628 In base 12, the sequence is 5E, 17E, 21E, 41E, 4EE, 7EE, 91E, 9EE, X5E, X9E, 10EE, 127E, 17EE, 189E, 1E3E, 219E, 231E, 243E, 257E, 28EE, 299E, 2XEE, 307E, 329E, 331E, 379E, 3X7E, 3E1E, 403E, 411E, 479E, 521E, 525E, 541E, 555E, 559E, 563E, 575E, 57EE, 583E, 5X5E, where X is 10 and E is 11. Moreover, the discriminant is -6480. - _Walter Kehowski_, Jun 01 2008 %H A140628 Vincenzo Librandi and Ray Chandler, <a href="/A140628/b140628.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A140628 N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references) %t A140628 Union[QuadPrimes2[39, 6, 71, 10000], QuadPrimes2[39, -6, 71, 10000]] (* see A106856 *) %Y A140628 Cf. A140633. %K A140628 nonn,easy %O A140628 1,1 %A A140628 _T. D. Noe_, May 19 2008