A036709 - OEIS

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A036709

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

1, 4, 8, 13, 22, 30, 41, 52, 65, 83, 98, 117, 135, 158, 181, 203, 232, 261, 290, 320, 349, 386, 422, 459, 496, 539, 581, 622, 669, 713, 764, 813, 861, 914, 971, 1028, 1086, 1143, 1206, 1266, 1333, 1396, 1463, 1533, 1600, 1673, 1743

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..46.

Index entries for Gaussian integers and primes

CROSSREFS

Sequence in context: A139097 A160395 A038793 * A052115 A007882 A265258

Adjacent sequences: A036706 A036707 A036708 * A036710 A036711 A036712

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved