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A193490 Number of rooted trees with n nodes and omega-valency 5. 5
0, 0, 0, 0, 0, 0, 1, 1, 8, 15, 70, 165, 608, 1601, 5259, 14564, 45040, 127521, 381691, 1090130, 3202382, 9171574, 26642413, 76312777, 220134939, 629965221, 1808975528, 5170502225, 14801940226, 42257089390 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

See A003120 for definitions.

LINKS

Table of n, a(n) for n=1..30.

J.-C. Arditti, Dénombrement des arborescences dont le graphe de comparabilité est Hamiltonien, Discrete Math., 5 (1973), 189-200.

CROSSREFS

Cf. A003120, A193487, A193488, A193489, A193491.

Sequence in context: A161342 A048732 A185038 * A015442 A253211 A275246

Adjacent sequences:  A193487 A193488 A193489 * A193491 A193492 A193493

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 27 2011

STATUS

approved

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Last modified December 16 03:14 EST 2019. Contains 330013 sequences. (Running on oeis4.)