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A037240 Molien series for 3-D group X1. 2
1, 1, 5, 10, 24, 42, 83, 132, 222, 335, 511, 728, 1047, 1428, 1956, 2586, 3414, 4389, 5638, 7084, 8888, 10966, 13494, 16380, 19841, 23751, 28371, 33566, 39616, 46376, 54177, 62832, 72726, 83661, 96045 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

Also multidigraphs with 3 nodes and n arcs - Vladeta Jovovic (vladeta(AT)eunet.rs), Dec 27 1999

REFERENCES

Jaric and Birman, J. Math. Phys. 18 (1977), 1459-1465; 2085.

LINKS

Index entries for Molien series

FORMULA

(1+x^2+3*x^3+5*x^4+x^5+x^6)/(1-x)/(1-x^2)^3/(1-x^3)^2

CROSSREFS

Sequence in context: A175661 A197174 A098112 * A177432 A166635 A078308

Adjacent sequences:  A037237 A037238 A037239 * A037241 A037242 A037243

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.