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Search: id:A000080
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| A000080 |
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Number of nonisomorphic minimal triangle graphs.
(Formerly M1173 N0450)
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+0
2
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| 1, 1, 2, 4, 9, 19, 48, 117, 307, 821, 2277, 6437, 18634, 54775
(list; graph; listen)
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OFFSET
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3,3
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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).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
R. Bowen, The generation of minimal triangle graphs, Math. Comp. 21 (1967), 248-250.
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EXAMPLE
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3 : ABC; 4 : ABC, ABD; 5 : ABC, ADE; and ABC, ABD, ABE.
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CROSSREFS
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Cf. A048781.
Adjacent sequences: A000077 A000078 A000079 this_sequence A000081 A000082 A000083
Sequence in context: A052328 A133228 A036717 this_sequence A153447 A076893 A096354
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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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3 more terms from Arlin Anderson (starship1(AT)gmail.com)
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