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A005794
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Number of orbits of Lorentzian modular group.
(Formerly M0079)
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0
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1, 1, 1, 2, 1, 1, 2, 3, 2, 1, 3, 3, 1, 2, 4, 4, 2, 2, 3, 5, 2, 1, 6, 5, 2, 3, 4, 4, 3, 2, 6, 7, 2, 2, 6, 7, 1, 3, 8, 5
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| Fox, Glenn J.; Parker, Phillip E.; The Lorentzian modular group and nonlinear lattices. The mathematical heritage of C. F. Gauss, 282-303, World Sci. Publishing, River Edge, NJ, 1991.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| Index entries for sequences related to modular groups
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CROSSREFS
| Sequence in context: A183391 A029346 A030496 * A201384 A143066 A091598
Adjacent sequences: A005791 A005792 A005793 * A005795 A005796 A005797
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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