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a(n)=number of Gaussian integers z=a+bi satisfying n-1/2<|z|<=n+1/2, a>=0, 0<=b<=a.
0

%I #7 Mar 30 2012 18:56:27

%S 1,2,2,3,5,4,6,6,7,9,8,10,9,12,12,11,15,15,15,15,15,19,18,19,19,22,21,

%T 21,24,22,26,25,24,27,29,29,29,29,32,30,34,32,34,35,34,37,35,39,39,40,

%U 40,41,44,40,43,45,43,48,43,50,48

%N a(n)=number of Gaussian integers z=a+bi satisfying n-1/2<|z|<=n+1/2, a>=0, 0<=b<=a.

%H <a href="/index/Ga#gaussians">Index entries for Gaussian integers and primes</a>

%K nonn

%O 0,2

%A _Clark Kimberling_