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A005368
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Occurrences of principal character.
(Formerly M2589)
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2
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1, 0, 1, 3, 6, 15, 42, 109, 320, 979, 3137, 10603, 37728, 140423, 546859, 2220294, 9374309, 41059926, 186149869, 871717073, 4208841555, 20917405824, 106849492793
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,4
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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).
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LINKS
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Russell Merris and William Watkins, Tensors and graphs, SIAM J. Algebraic Discrete Methods 4 (1983), no. 4, 534-547.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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