id:A152417 - OEIS Search Results

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A fives sequence: a(n)=(5^n - 1)/(2^(3 - Mod[n, 2])).

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0, 1, 3, 31, 78, 781, 1953, 19531, 48828, 488281, 1220703, 12207031, 30517578, 305175781, 762939453, 7629394531, 19073486328, 190734863281, 476837158203, 4768371582031, 11920928955078, 119209289550781, 298023223876953 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=(5^n - 1)/(2^(3 - Mod[n, 2])).`
	MATHEMATICA	`a[n_] := (5^n - 1)/(2^(3 - Mod[n, 2]));` `Table[a[n], {n, 0, 30}]`
	CROSSREFS	`A003462` `Sequence in context: A062616 A031916 A137185 this_sequence A077547 A104312 A107197` `Adjacent sequences: A152414 A152415 A152416 this_sequence A152418 A152419 A152420`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Dec 03 2008`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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