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A006536 Switching classes of digraphs.
(Formerly M1710)
+0
1
2, 6, 38, 684, 50224, 13946352, 14061131152, 50947324188128, 666754350781269760, 31763991166456912086656, 5550343429517595744902558208, 3581353054755185129132443153728000 (list; graph; listen)
OFFSET

1,1

REFERENCES

R. C. Read, personal communication.

CROSSREFS

Cf. A002854, A049313.

Sequence in context: A005738 A055704 A005740 this_sequence A057297 A005530 A072191

Adjacent sequences: A006533 A006534 A006535 this_sequence A006537 A006538 A006539

KEYWORD

nonn,nice

AUTHOR

njas

EXTENSIONS

More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Jul 22 2000

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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