A102925 Imaginary part of Gaussian amicable numbers in order of increasing magnitude. See A102924 for the real part.

1020, 2060, -1228, 1020, -2356, 2435, 467, -4988, -6187, -5471, 4275, -6133, -5251, 3960, -8280, 4606

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Mathematica

s[z_Complex] := DivisorSigma[1, z]-z; nn=10000; lst={}; Do[d=a^2+b^2; If[d<nn^2, z=a+b*I; Do[If[s[s[z]]==z, AppendTo[lst, {d, z}]]; z=z*I, {4}]], {a, nn}, {b, nn}]; Im[Transpose[Sort[lst]][[2]]]

Crossrefs

Sequence in context: A104444 A157510 A015160 * A216115 A024020 A069791

Adjacent sequences: A102922 A102923 A102924 * A102926 A102927 A102928

Keyword

sign

Author

T. D. Noe, Jan 19 2005

Status

approved