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A099380
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The imaginary part of -n', the arithmetic derivative for Gaussian integers.
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2
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| a(n) is zero when n is 0, 1, or the product of Gaussian primes (A002145).
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REFERENCES
| See A09379
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LINKS
| T. D. Noe, Table of n, a(n) for n=0..2048
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MATHEMATICA
| (* see A099379 for the definition of the di function *) Im[Table[ -di[n], {n, 0, 100}]]
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CROSSREFS
| Cf. A003415 (arithmetic derivative of n), A099379 (real part of the Gaussian-integer derivative of n).
Sequence in context: A146543 A179990 A021052 * A154909 A185348 A020780
Adjacent sequences: A099377 A099378 A099379 * A099381 A099382 A099383
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KEYWORD
| nice,nonn
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AUTHOR
| T. D. Noe (noe(AT)sspectra.com), Oct 14 2004
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