id:A084362 - OEIS Search Results

Search: id:A084362

Displaying 1-1 of 1 results found.

page 1

a(n) = Sum{j_1 + ... + j_n = n} Sum_{k=1..n} k*C(n-1,k-1), where the outer sum is over all partitions of n.

+0
1

1, 4, 12, 35, 91, 234, 566, 1353, 3133, 7172, 16108, 35871, 78891, 172338, 373386, 804649, 1723957, 3678128, 7813748, 16543943, 34913591, 73480386, 154249498, 323078245, 675271797, 1408772440, 2933901672, 6100500103 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Total number of levels in a multi-hierarchy society with n members.`
	LINKS	`N. J. A. Sloane and Thomas Wieder, The Number of Hierarchical Orderings, Order 21 (2004), 83-89.`
	CROSSREFS	`Adjacent sequences: A084359 A084360 A084361 this_sequence A084363 A084364 A084365` `Sequence in context: A061703 A126948 A131593 this_sequence A079736 A035045 A090328`
	KEYWORD	`easy,nonn`
	AUTHOR	`Thomas Wieder (wieder.thomas(AT)t-online.de), Jun 24 2003`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)Eunet.yu), Jun 24 2003`

page 1

Search completed in 0.002 seconds

Last modified November 21 00:02 EST 2008. Contains 150810 sequences.

AT&T Labs Research