id:A128534 - OEIS Search Results

Search: id:A128534

Displaying 1-1 of 1 results found.

page 1

F(n)*L(n-1) where F=Fibonacci and L=Lucas numbers.

+0
3

0, 2, 1, 6, 12, 35, 88, 234, 609, 1598, 4180, 10947, 28656, 75026, 196417, 514230, 1346268, 3524579, 9227464, 24157818, 63245985 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Generally, F(n)L(n+k) = F(2n + k) + F(k)*(-1)^(n+1). If k=0 the sequence is A001906; if k=1 it is A081714.`
	FORMULA	`a(n) = F(2*n - 1) + (-1)^(n+1), assuming F(0)=0 and L(0)=2.`
	EXAMPLE	`a(5) = 35 because F(5)L(4) = 57`
	CROSSREFS	`Cf. A001906, A081714, A128533, A128535.` `Sequence in context: A113025 A113216 A081064 this_sequence A002562 A136456 A123968` `Adjacent sequences: A128531 A128532 A128533 this_sequence A128535 A128536 A128537`
	KEYWORD	`easy,nonn`
	AUTHOR	`Axel Harvey (ax(AT)hirsig.ca), Mar 08 2007`

page 1

Search completed in 0.002 seconds

Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

AT&T Labs Research