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A218859 A218858/4. 3

%I

%S 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 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 22,0,14,0,34,0,23,0,20,0,19,0,22,0,18,0,16,0

%N A218858/4.

%C Essentially the number of first-quadrant Gaussian primes at taxicab distance n.

%H T. D. Noe, <a href="/A218859/b218859.txt">Table of n, a(n) for n = 0..10000</a>

%H T. D. Noe, <a href="/A218859/a218859.png">Linear plot</a>

%Y Cf. A222593 (first-quadrant Gaussian primes).

%K nonn

%O 0,4

%A _T. D. Noe_, Nov 12 2012

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Last modified October 15 20:04 EDT 2019. Contains 328037 sequences. (Running on oeis4.)