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A138562 Number of "squashed-tree" graphs with n central nodes, the labeled case, allowing the direct link between L and R. +0
2
1, 4, 38, 616, 14744, 479364, 20021768, 1031673164, 63597989864, 4579513525216, 377953469391584, 35211153592004064, 3657198048669038384, 419166387797337858500, 52561549979435515611488, 7158828855330149502246076, 1052478318277669232896492064, 166132533639153074372662711680 (list; graph; listen)
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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.


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