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A002679
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Denominator of 2*Stirling_2(n,2)/n!.
(Formerly M4820 N2062)
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3
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1, 1, 12, 4, 360, 40, 20160, 12096, 259200, 604800, 239500800, 760320, 43589145600, 217945728000, 1494484992000, 697426329600, 3201186852864000, 16937496576000, 1216451004088320000, 30964207376793600, 11469395181404160000
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OFFSET
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2,3
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REFERENCES
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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).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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