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A108532 Number of asymmetric mobiles (cycle rooted trees) with n nodes and 2-colored internal (non-leaf) nodes. +0
3
1, 2, 4, 12, 38, 136, 490, 1852, 7108, 27880, 110892, 447060, 1821252, 7489732, 31045350, 129587996, 544228664, 2298008824, 9750218012, 41548438040, 177740526076, 763046178960, 3286318131646, 14195239150556, 61481540391722 (list; graph; listen)
OFFSET

1,2

LINKS

Index entries for sequences related to mobiles

C. G. Bower, Transforms (2)

FORMULA

Shifts left and halves under CHK transform.

CROSSREFS

Cf. A032171, A108530, A108531.

Sequence in context: A149844 A149845 A149846 this_sequence A000940 A008404 A099214

Adjacent sequences: A108529 A108530 A108531 this_sequence A108533 A108534 A108535

KEYWORD

nonn,eigen

AUTHOR

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

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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