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Search: id:A104252
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A104252 Number of oriented prime alternating tangles. +0
1
1, 2, 7, 29, 137, 679, 3515, 18677, 101463, 560062, 3132639, 17708417, 100998567, 5803646663, 3356435363, 19519575163 (list; graph; listen)
OFFSET

1,2
LINKS

P. Zinn-Justin and J.-B. Zuber, On the counting of colored tangles

CROSSREFS

Sequence in context: A110576 A074600 A064641 this_sequence A018977 A030849 A030973

Adjacent sequences: A104249 A104250 A104251 this_sequence A104253 A104254 A104255

KEYWORD

nonn,hard

AUTHOR

Ralf Stephan, Feb 27 2005

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.

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