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A172086 Main pure Bernoulli twin numbers (third part) : (Bernoulli twin numbers (A051716/A051717) 1,-1/2,-1/3,-1/6,-1/30,1/30,) + companion(s) (submitted A172083/A051717) 1,-3/2,2/3,-1/6,-1/30,1/30. See A027641. 2
2, -2, 1, -1, -1, 1, 1, -1, -1, 1, 5, -5, -691, 691, 7, -7, -3617, 3617 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Denominators:1,1,3,3,15,15,21,21,15,15,33,33,1365,1365,=double A001897. See A000367/A002445.

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Sequence in context: A083888 A102681 A274013 * A204014 A156839 A172299

Adjacent sequences:  A172083 A172084 A172085 * A172087 A172088 A172089

KEYWORD

uned,sign

AUTHOR

Paul Curtz, Jan 25 2010

STATUS

approved

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Last modified August 11 06:25 EDT 2020. Contains 336422 sequences. (Running on oeis4.)