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A100649 Numerator of 1 - Sum_{i=1..n} Bernoulli(i). 4
1, 3, 4, 4, 41, 41, 47, 47, 289, 289, 1502, 1502, 15551, 15551, 5809, 5809, 3818123, 3818123, -76776508, -76776508, 934336415, 934336415, -127396984577, -127396984577, 6013822435553, 6013822435553, -149990624319638, -149990624319638, 167911724519886437, 167911724519886437 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..29.

EXAMPLE

1, 3/2, 4/3, 4/3, 41/30, 41/30, 47/35, 47/35, 289/210, 289/210, 1502/1155, 1502/1155, 15551/10010, 15551/10010, 5809/15015, 5809/15015, 3818123/510510, 3818123/510510, ... = A100649/A100650.

MAPLE

A100649 := proc(n) 1-add( bernoulli(i), i=1..n) ; numer(%) ; end proc: # R. J. Mathar, Jul 01 2011

CROSSREFS

Cf. A027641, A027642.

Sequence in context: A023189 A067137 A060115 * A158962 A263824 A215747

Adjacent sequences:  A100646 A100647 A100648 * A100650 A100651 A100652

KEYWORD

sign,frac

AUTHOR

N. J. A. Sloane, Dec 05 2004

STATUS

approved

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Last modified September 18 09:59 EDT 2019. Contains 327170 sequences. (Running on oeis4.)