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A108529 Number of asymmetric mobiles (cycle rooted trees) with n generators. 8
1, 1, 2, 5, 16, 51, 177, 621, 2246, 8245, 30783, 116257, 443945, 1710255, 6640939, 25961690, 102105115, 403701135, 1603721999, 6397931901, 25621989760, 102965680728, 415091909292, 1678226164646, 6803121058354, 27645628327636 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

A generator is a leaf or a node with just one child.

LINKS

C. G. Bower, Transforms (2)

Index entries for sequences related to mobiles

FORMULA

G.f. satisfies (2-x)*A(x) = x - 1 + CHK(A(x))

CROSSREFS

Cf. A108521-A108528, A032171.

Sequence in context: A054660 A148388 A148389 * A011819 A148390 A148391

Adjacent sequences:  A108526 A108527 A108528 * A108530 A108531 A108532

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jun 07 2005

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Last modified February 17 17:35 EST 2012. Contains 206061 sequences.