A036710 a(n)=number of Gaussian integers z=a+bi satisfying n-1/2<|z|<=n+1/2, a>=0, b>=0.

1, 3, 4, 5, 9, 8, 11, 11, 13, 18, 15, 19, 18, 23, 23, 22, 29, 29, 29, 30, 29, 37, 36, 37, 37, 43, 42, 41, 47, 44, 51, 49, 48, 53, 57, 57, 58, 57, 63, 60, 67, 63, 67, 70, 67, 73, 70, 77, 77, 79, 80, 81, 87, 80, 85, 89, 86, 95, 85, 99, 96