A054603 - OEIS

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A054603

Sum_{d|4} phi(d)*n^(4/d).

0, 4, 24, 96, 280, 660, 1344, 2464, 4176, 6660, 10120, 14784, 20904, 28756, 38640, 50880, 65824, 83844, 105336, 130720, 160440, 194964, 234784, 280416, 332400, 391300, 457704, 532224, 615496, 708180, 810960, 924544, 1049664 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n) = n^4+n^2+2n.`
	CROSSREFS	`Sequence in context: A026952 A009769 A119878 * A100381 A091143 A119920` `Adjacent sequences: A054600 A054601 A054602 * A054604 A054605 A054606`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Apr 16 2000`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.