id:A077455 - OEIS Search Results

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sigma(n^4,4)/sigma(n^4,1).

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1, 2255, 360205, 8965359, 195688121, 812262275, 11869610005, 36654862063, 190649623129, 441276712855, 2853329308061, 3229367138595, 21506735660905, 26765970561275, 70487839624805, 150121132912367, 548357292625505 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=A001158(n^4)/A000203(n^4)`
	PROGRAM	`(PARI) a(n)=sumdiv(n^4, d, d^4)/sigma(n^4)`
	CROSSREFS	`Cf. A057660.` `Sequence in context: A107529 A125522 A123297 this_sequence A068754 A035873 A046168` `Adjacent sequences: A077452 A077453 A077454 this_sequence A077456 A077457 A077458`
	KEYWORD	`nonn,mult`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 30 2002`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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