id:A152418 - OEIS Search Results

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A sevens sequence: a(n)=(7^n - 1)/(2^(4 - 3*Mod[n, 2])).

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0, 3, 3, 171, 150, 8403, 7353, 411771, 360300, 20176803, 17654703, 988663371, 865080450, 48444505203, 42388942053, 2373780754971, 2077058160600, 116315256993603, 101775849869403, 5699447592686571, 4987016643600750 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=(7^n - 1)/(2^(4 - 3*Mod[n, 2])).`
	MATHEMATICA	`a[n_] := (7^n - 1)/(2^(4 - 3*Mod[n, 2]));` `Table[a[n], {n, 0, 30}]`
	CROSSREFS	`A003462` `Sequence in context: A006845 A071536 A094755 this_sequence A113457 A113466 A007301` `Adjacent sequences: A152415 A152416 A152417 this_sequence A152419 A152420 A152421`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Dec 03 2008`

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

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