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A003576 Dowling numbers. 0
1, 2, 8, 48, 352, 3008, 29440, 324096, 3947520, 52541440, 757260288, 11733385216, 194272854016, 3419584921600, 63707979972608, 1251489089060864, 25836869372608512, 558946705406427136 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

Benoumhani, Moussa; On Whitney numbers of Dowling lattices. Discrete Math. 159 (1996), no. 1-3, 13-33.

FORMULA

E.g.f.: exp(z + 1/4 exp(4 z) - 1/4).

CROSSREFS

Sequence in context: A136722 A085615 A054726 * A095989 A177388 A124453

Adjacent sequences:  A003573 A003574 A003575 * A003577 A003578 A003579

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 20:26 EST 2012. Contains 205852 sequences.