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Search: id:A006536
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| A006536 |
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Switching classes of digraphs.
(Formerly M1710)
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+0
1
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| 2, 6, 38, 684, 50224, 13946352, 14061131152, 50947324188128, 666754350781269760, 31763991166456912086656, 5550343429517595744902558208, 3581353054755185129132443153728000
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
R. C. Read, personal communication.
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CROSSREFS
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Cf. A002854, A049313.
Sequence in context: A005738 A055704 A005740 this_sequence A057297 A005530 A072191
Adjacent sequences: A006533 A006534 A006535 this_sequence A006537 A006538 A006539
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 22 2000
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