id:A161219 - OEIS Search Results

Search: id:A161219

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(1/n) * Sum_{d|n} phi(n/d)*2^(d+1).

+0
2

4, 6, 8, 12, 16, 28, 40, 72, 120, 216, 376, 704, 1264, 2364, 4384, 8232, 15424, 29204, 55192, 104976, 199760, 381492, 729448, 1398504, 2684368, 5162856, 9942136, 19175160, 37025584, 71585136, 138547336, 268439592, 520602352, 1010588256, 1963413664, 3817763800 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A000031, A053635, A160619, A161217.` `Adjacent sequences: A161216 A161217 A161218 this_sequence A161220 A161221 A161222`
	KEYWORD	`nonn,new`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 21 2009`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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