A036701 a(n)=number of Gaussian integers z=a+bi satisfying n-1<|z|<=n, a>=0, 0<=b<a.

0, 1, 1, 2, 3, 4, 4, 5, 6, 7, 8, 8, 8, 11, 11, 12, 11, 13, 14, 15, 16, 15, 18, 17, 18, 21, 20, 21, 21, 22, 24, 23, 26, 25, 27, 29, 25, 30, 28, 33, 31, 30, 33, 33, 36, 36, 33, 37, 37, 39, 40, 41, 41, 39, 42, 42, 46, 43, 46, 45, 47