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A242651 Real part of Prod_{k=0..n) (I-k). 3
0, -1, 3, -10, 40, -190, 1050, -6620, 46800, -365300, 3103100, -28269800, 271627200, -2691559000, 26495469000, -238131478000, 1394099824000, 15194495654000, -936096296850000, 29697351895900000, -819329864480400000, 21683886333440500000, -570263312237604700000, 15145164178973569000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Shifted version of A003703. - R. J. Mathar, May 30 2014

REFERENCES

Edmund Landau, Handbuch der Lehre von der Verteilung der Primzahlen, Chelsea Publishing, NY 1953, pp. 561-562, Section 148.

LINKS

Table of n, a(n) for n=0..23.

EXAMPLE

Table of n, Prod_{k=0..n) (I-k):

0, I

1, -1-I

2, 3+I

3, -10

4, 40-10*I

5, -190+90*I

6, 1050-730*I

7, -6620+6160*I

8, 46800-55900*I

9, -365300+549900*I

10, 3103100-5864300*I

11, -28269800+67610400*I

12, 271627200-839594600*I

CROSSREFS

Cf. A242652, A101686.

A231530 is the same except for signs.

Sequence in context: A217885 A216367 A003703 * A231531 A136128 A089902

Adjacent sequences:  A242648 A242649 A242650 * A242652 A242653 A242654

KEYWORD

sign

AUTHOR

N. J. A. Sloane, May 29 2014

STATUS

approved

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Last modified May 24 06:53 EDT 2019. Contains 323529 sequences. (Running on oeis4.)