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 A218859 #8 Feb 27 2013 21:19:12 %S A218859 0,0,1,3,0,4,0,5,0,4,0,7,0,6,0,8,0,8,0,9,0,6,0,9,0,16,0,8,0,12,0,11,0, %T A218859 8,0,18,0,16,0,12,0,18,0,15,0,14,0,15,0,10,0,14,0,18,0,28,0,16,0,19,0, %U A218859 22,0,14,0,34,0,23,0,20,0,19,0,22,0,18,0,16,0 %N A218859 A218858/4. %C A218859 Essentially the number of first-quadrant Gaussian primes at taxicab distance n. %H A218859 T. D. Noe, <a href="/A218859/b218859.txt">Table of n, a(n) for n = 0..10000</a> %H A218859 T. D. Noe, <a href="/A218859/a218859.png">Linear plot</a> %Y A218859 Cf. A222593 (first-quadrant Gaussian primes). %K A218859 nonn %O A218859 0,4 %A A218859 _T. D. Noe_, Nov 12 2012