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A046752 Triangle of number of homeomorphically irreducible stars with n edges and m nodes. 1
1, 1, 1, 1, 1, 2, 2, 1, 3, 5, 1, 4, 13, 4, 1, 6, 26, 24, 5, 1, 7, 47, 84, 38, 1, 9, 78, 233, 216, 23, 1, 11, 126, 557, 914, 314, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

REFERENCES

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

LINKS

Table of n, a(n) for n=0..36.

EXAMPLE

1; 1; 1 1; 1 2 2; 1 3 5;...

CROSSREFS

Cf. A002935.

Sequence in context: A266504 A111375 A165997 * A086350 A239830 A140767

Adjacent sequences:  A046749 A046750 A046751 * A046753 A046754 A046755

KEYWORD

nonn,nice,tabf,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 18 06:34 EST 2019. Contains 319269 sequences. (Running on oeis4.)