id:A026993 - OEIS Search Results

Search: id:A026993

Displaying 1-1 of 1 results found.

page 1

a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026692.

+0
1

1, 6, 32, 180, 984, 4606, 22689, 114992, 567129, 2576582, 12586319, 63131004, 305635176, 1384074886, 6739962365, 33708050180, 162468169385, 737652413014 (list; graph; listen)

	OFFSET	`2,2`
	CROSSREFS	`Sequence in context: A125190 A000558 A047763 this_sequence A121965 A108188 A020058` `Adjacent sequences: A026990 A026991 A026992 this_sequence A026994 A026995 A026996`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

page 1

Search completed in 0.002 seconds

Last modified August 28 22:44 EDT 2008. Contains 143251 sequences.

AT&T Labs Research