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A038079 Number of rooted identity trees with 3-colored nodes. 2
3, 9, 36, 192, 1089, 6642, 42129, 275571, 1844028, 12567762, 86924745, 608612814, 4305284400, 30723593751, 220917003516, 1599013642359, 11641144003245, 85186969539435, 626245146267393, 4622806865390823 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

N. J. A. Sloane, Transforms

Index entries for sequences related to rooted trees

FORMULA

Shifts left and divides by 3 under Weigh transform.

CROSSREFS

Cf. A004111, A038077-A038080.

Cf. A052757.

Sequence in context: A030936 A030870 A030965 * A163144 A128094 A135474

Adjacent sequences:  A038076 A038077 A038078 * A038080 A038081 A038082

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.