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A036707
a(n)=number of Gaussian integers z=a+bi satisfying |z|<=n+1/2, b>=0.
+0
1
1, 6, 13, 22, 39, 54, 75, 96, 121, 156, 185, 222, 257, 302, 347, 390, 447, 504, 561, 620, 677, 750, 821, 894, 967, 1052, 1135, 1216, 1309, 1396, 1497, 1594, 1689, 1794, 1907, 2020, 2135, 2248, 2373, 2492, 2625, 2750, 2883, 3022
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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