A117862 - OEIS

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A117862

Number of palindromes (in base 3) below 3^n.

2, 4, 10, 16, 34, 52, 106, 160, 322, 484 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = 43^((n-1)/2)-2 (n odd), 23^(n/2)-2 (n even).`
	CROSSREFS	`Cf. A050250.` `Sequence in context: A141138 A077627 A153927 * A105024 A050871 A077635` `Adjacent sequences: A117859 A117860 A117861 * A117863 A117864 A117865`
	KEYWORD	`nonn,base`
	AUTHOR	`Martin Renner (martin.renner(AT)gmx.net), May 02 2006`

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.