A117864 - OEIS

This site is supported by donations to The OEIS Foundation.

A117864

Number of palindromes (in base 5) below 5^n.

4, 8, 28, 48, 148, 248, 748, 1248, 3748, 6248 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = 65^((n-1)/2)-2 (n odd), 25^(n/2)-2 (n even).`
	CROSSREFS	`Cf. A050250.` `Sequence in context: A110132 A099513 A104042 * A020138 A090083 A034515` `Adjacent sequences: A117861 A117862 A117863 * A117865 A117866 A117867`
	KEYWORD	`nonn,base`
	AUTHOR	`Martin Renner (martin.renner(AT)gmx.net), May 02 2006`

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

Last modified February 14 18:47 EST 2012. Contains 205663 sequences.