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A047681 3^(2*n)*(3^(2*n)-1)*bernoulli(2*n)/(2*n). 0
6, -54, 2106, -179334, 26414586, -5957217414, 1906398972666, -821369346492294, 458382160232420346, -321645776191296739974, 277173760840187306341626, -287758284647458145849816454, 354245505704926834826124160506, -510230879113388713374134585497734 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

J. W. Milnor and J. D. Stasheff, Characteristic Classes, Princeton, 1974, p. 283.

LINKS

Index entries for sequences related to Bernoulli numbers.

CROSSREFS

Sequence in context: A138434 A171681 A049037 * A075575 A073655 A119222

Adjacent sequences:  A047678 A047679 A047680 * A047682 A047683 A047684

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.