id:A157005 - OEIS Search Results

Search: id:A157005

Displaying 1-1 of 1 results found.

page 1

A Somos-4 variant.

+0
4

1, 2, 8, 24, 112, 736, 3776, 40192, 391424, 4203008, 85312512, 1270368256, 32235102208, 1038278549504, 27640704385024, 1549962593927168, 73624753456480256, 4273828146025070592, 435765959975516766208 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Hankel transform of A157004.`
	FORMULA	`a(0)=1,a(1)=2,a(2)=8,a(3)=24; for n >= 4, a(n)=(a(n-1)a(n-3)+a(n-2)^2)/a(n-4);` `a(n)=2^n*A006720(n+2).`
	CROSSREFS	`Sequence in context: A150667 A150668 A150669 this_sequence A123775 A052624 A087982` `Adjacent sequences: A157002 A157003 A157004 this_sequence A157006 A157007 A157008`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 20 2009`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research