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A046056 Smallest order for which there are n nonisomorphic finite Abelian groups, or 0 if no such order exists. 7
1, 4, 8, 36, 16, 72, 32, 900, 216, 144, 64, 1800, 0, 288, 128, 44100, 0, 5400, 0, 480, 864, 256, 0, 88200, 1296, 0, 27000, 480, 0, 512, 0, 5336100, 1728, 0, 2592, 264600, 0, 0, 0, 176400, 0, 1024, 0, 2304, 3456, 0, 0, 10672200, 7776, 32400, 0 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

There is a k: A000688(k)=n if and only if n is product of partition numbers.

LINKS

Index entries for sequences related to enumerating groups.

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

B. Horvat, G. Jaklic and T. Pisanski, On the number of Hamiltonian groups

CROSSREFS

Cf. A000041, A000688, A046054, A046055, A046057.

Sequence in context: A197157 A149108 A149109 * A158863 A074736 A044829

Adjacent sequences:  A046053 A046054 A046055 * A046057 A046058 A046059

KEYWORD

nonn,nice

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

EXTENSIONS

More terms from Christian G. Bower (bowerc(AT)usa.net)

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.