id:A054610 - OEIS Search Results

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Sum_{d|n} phi(d)*3^(n/d).

+0
2

0, 3, 12, 33, 96, 255, 780, 2205, 6672, 19755, 59340, 177177, 532416, 1594359, 4785228, 14349525, 43053504, 129140211, 387441756, 1162261521, 3486844320, 10460357775, 31381236876, 94143178893, 282430082832, 847288610475 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`n * A001867(n).`
	CROSSREFS	`Sequence in context: A054602 A083725 A159228 this_sequence A117655 A081423 A060298` `Adjacent sequences: A054607 A054608 A054609 this_sequence A054611 A054612 A054613`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Apr 16 2000`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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