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A102532 Imaginary part of absolute Gaussian perfect numbers, in order of increasing magnitude. 6
7, 42, 57, 82, 78, 189, 341, 549, 664, 1048, 1016, 3776, 4072, 1672, 5049, 3816, 1128, 368, 7097, 2504, 6816, 7912, 10743, 12605, 12606, 248, 10392, 16853, 15208, 20824, 344, 15688, 392, 18076, 1340, 22302, 5912, 1573, 24392, 21328, 24896, 7048, 1220, 29288, 9678 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A102531 for the real part.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..76

MATHEMATICA

lst={}; nn=1000; Do[z=a+b*I; If[Abs[z]<=nn && Abs[(DivisorSigma[1, z]-z)] == Abs[z], AppendTo[lst, {Abs[z]^2, z}]], {a, nn}, {b, nn}]; Im[Transpose[Sort[lst]][[2]]]

CROSSREFS

Cf. A102531, A102506, A102507, A101366, A101367.

Sequence in context: A290045 A188066 A225327 * A297405 A044109 A195320

Adjacent sequences: A102529 A102530 A102531 * A102533 A102534 A102535

KEYWORD

nonn

AUTHOR

T. D. Noe, Jan 13 2005

EXTENSIONS

a(22)-a(45) from Amiram Eldar, Feb 10 2020

STATUS

approved

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Last modified November 28 00:05 EST 2022. Contains 358406 sequences. (Running on oeis4.)