A122067 - OEIS

This site is supported by donations to The OEIS Foundation.

A122067

a(n)=2^A014105(n).

1, 8, 1024, 2097152, 68719476736, 36028797018963968, 302231454903657293676544, 40564819207303340847894502572032, 87112285931760246646623899502532662132736 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=(-1)^floor(n/2)/prod(i=1,2n,cos(iPi/(2*n+1))^i)`
	PROG	`(PARI) a(n)=2^(n(2n+1))`
	CROSSREFS	`Sequence in context: A176367 A007117 A085533 * A076688 A004808 A176372` `Adjacent sequences: A122064 A122065 A122066 * A122068 A122069 A122070`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 15 2006`

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

Last modified February 16 14:37 EST 2012. Contains 205930 sequences.