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A083385 Total height of all elements in all preferential arrangements of n elements, where elements at the bottom level have height 1. +0
3
1, 8, 66, 616, 6530, 77964, 1037974, 15266192, 246003354, 4312200340, 81714050462, 1664849747928, 36296654286178, 843235868819036, 20797267023597030, 542745686844469024, 14942598078715420202, 432842048921633654052, 13159824571927634917678, 419012563973742290424680 (list; graph; listen)
OFFSET

1,2

LINKS

N. J. A. Sloane and Thomas Wieder, The Number of Hierarchical Orderings, Order 21 (2004), 83-89.

FORMULA

See A083384 for formula.

CROSSREFS

Equals A083384(n) + n*A000670(n). Cf. A000670, A083410.

Adjacent sequences: A083382 A083383 A083384 this_sequence A083386 A083387 A083388

Sequence in context: A004331 A121777 A056621 this_sequence A121766 A052620 A052669

KEYWORD

nonn

AUTHOR

njas, Jun 07 2003

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.


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