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A002679 Denominator of 2*Stirling_2(n,2)/n!.
(Formerly M4820 N2062)
3
1, 1, 12, 4, 360, 40, 20160, 12096, 259200, 604800, 239500800, 760320, 43589145600, 217945728000, 1494484992000, 697426329600, 3201186852864000, 16937496576000, 1216451004088320000, 30964207376793600, 11469395181404160000 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

REFERENCES

H. E. Salzer, Tables of coefficients for differences in terms of the derivatives, Journal of Mathematics and Physics, 23 (1944), 210-212.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

T. D. Noe, Table of n, a(n) for n=2..100

Index entries for sequences related to Bernoulli numbers.

CROSSREFS

Cf. A002678 (numerators).

Sequence in context: A144630 A107670 A157782 * A133208 A282578 A205141

Adjacent sequences:  A002676 A002677 A002678 * A002680 A002681 A002682

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Sean A. Irvine, Dec 20 2016

STATUS

approved

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Last modified February 17 12:14 EST 2020. Contains 331996 sequences. (Running on oeis4.)