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A047683 5^(2*n)*(5^(2*n)-1)*bernoulli(2*n)/(2*n). 1
50, -3250, 968750, -635781250, 722480468750, -1257228613281250, 3104408581542968750, -10320446545227050781250, 44440884525382995605468750, -240617847532228950500488281250, 1599915691073966364860534667968750, -12816452064605408400845527648925781250 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

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

LINKS

Table of n, a(n) for n=0..11.

Index entries for sequences related to Bernoulli numbers.

CROSSREFS

Sequence in context: A239653 A223661 A224111 * A010564 A183689 A248205

Adjacent sequences:  A047680 A047681 A047682 * A047684 A047685 A047686

KEYWORD

sign

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 22 10:24 EDT 2019. Contains 328317 sequences. (Running on oeis4.)