id:A026992 - OEIS Search Results

Search: id:A026992

Displaying 1-1 of 1 results found.

page 1

a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=n-1, T given by A026692.

+0
1

1, 4, 15, 72, 385, 1740, 7200, 33892, 174369, 806288, 3477513, 16493280, 84033826, 393038584, 1732173866, 8260858904, 41899043017, 197360311690, 881681864213 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A098614 A027316 A085349 this_sequence A039764 A020082 A020037` `Adjacent sequences: A026989 A026990 A026991 this_sequence A026993 A026994 A026995`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

page 1

Search completed in 0.002 seconds

Last modified September 5 17:15 EDT 2008. Contains 143476 sequences.

AT&T Labs Research