A180966 - OEIS

This site is supported by donations to The OEIS Foundation.

A180966

Hankel transform of A123164

1, 4, 28, 384, 10496, 573440, 62652416, 13690208256, 5982889443328, 5229277301702656, 9141181343655264256, 31958984107701798174720, 223467104335874481157308416, 3125102257923487167715657908224 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..13.`
	FORMULA	`a(n)=2^C(n,2)sum{k=0..floor(n/2), C(n-k,k)(-2)^k4^(n-2k)};` `a(n)=2^C(n,2)[x^n](1/(1-4x+2x^2)).`
	CROSSREFS	`Sequence in context: A095288 A155105 A132685 * A203032 A086812 A197872` `Adjacent sequences: A180963 A180964 A180965 * A180967 A180968 A180969`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry, Sep 29 2010`
	STATUS	`approved`

Content is available under The OEIS End-User License Agreement .

Last modified May 18 18:13 EDT 2013. Contains 225422 sequences.