A099380 - OEIS

A099380

The imaginary part of -n', the arithmetic derivative for Gaussian integers.

0, 0, 2, 0, 8, 3, 6, 0, 24, 0, 16, 0, 24, 5, 14, 9, 64, 5, 18, 0, 52, 0, 22, 0, 72, 30, 36, 0, 56, 7, 48, 0, 160, 0, 44, 21, 72, 7, 38, 15, 144, 9, 42, 0, 88, 27, 46, 0, 192, 0, 110, 15, 124, 9, 54, 33, 168, 0, 72, 0, 156, 11, 62, 0, 384, 64, 66, 0, 156, 0, 112, 0, 216, 11, 88, 90, 152

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OFFSET

0,3

COMMENTS

a(n) is zero when n is 0, 1, or the product of Gaussian primes (A002145).

REFERENCES

See A099379

LINKS

T. D. Noe, Table of n, a(n) for n = 0..2048

MATHEMATICA

(* see A099379 for the definition of the di function *) Im[Table[ -di[n], {n, 0, 100}]]

CROSSREFS