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Search: id:A038193
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| A038193 |
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Let G be an n-node graph with valencies d_1 .. d_n say; let m = (d_1+..+d_n)/n and s = n*Sum( (d_i-m)^2 ) be the scaled degree variance; a(n) gives number of different values taken by s. |
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1
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OFFSET
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1,3
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REFERENCES
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Computed by Jan Hagberg, Dept. Statistics, Stockholm Univ., Sweden.
J. Hagberg, Centrality testing and the distribution of the degree variance in Bernoulli graphs Research report 2008:8(2000), Stockholm University, Department of Statistics.
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LINKS
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J. Hagberg, Centrality testing and the distribution of the degree variance in Bernoulli graphs, Research Report 2000:8, Department of Statistics, Stockholm University, 2000.
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CROSSREFS
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Sequence in context: A116439 A018525 A102935 this_sequence A002382 A023168 A134419
Adjacent sequences: A038190 A038191 A038192 this_sequence A038194 A038195 A038196
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KEYWORD
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nonn,nice,more
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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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Hagberg reference from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 29 2004
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