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A002935 Number of series-reduced star graphs with n edges.
(Formerly M1364 N0528)
1
1, 1, 2, 5, 9, 22, 62, 177, 560, 1939, 7067, 27331, 110871, 468684, 2057161 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

REFERENCES

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=3..17.

B. R. Heap, The enumeration of homeomorphically irreducible star graphs, J. Math. Phys., 7 (1966), 1582-1587.

CROSSREFS

Cf. A046752.

Sequence in context: A052962 A173565 A268651 * A128266 A088356 A246350

Adjacent sequences:  A002932 A002933 A002934 * A002936 A002937 A002938

KEYWORD

nonn,nice,more,changed

AUTHOR

N. J. A. Sloane

EXTENSIONS

a(13)-a(17) from Sean A. Irvine, May 18 2020

STATUS

approved

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Last modified May 26 08:39 EDT 2020. Contains 334620 sequences. (Running on oeis4.)