id:A058273 - OEIS Search Results

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An approximation to sigma_{5/2}(n): round( sum_{d|n} d^(5/2) ).

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1, 7, 17, 39, 57, 110, 131, 220, 260, 379, 402, 641, 610, 870, 944, 1244, 1193, 1728, 1575, 2200, 2167, 2678, 2538, 3644, 3182, 4063, 4048, 5050, 4530, 6283, 5352, 7036, 6674, 7939, 7434, 10035, 8328, 10482, 10125, 12500, 10765, 14426 (list; graph; listen)

	OFFSET	`1,2`
	MAPLE	`f := proc(n) local d, t1, t2; t2 := 0; t1 := divisors(n); for d in t1 do t2 := t2 + d^(5/2) end do; t2; end proc; # exact value of sigma_{5/2}(n)`
	CROSSREFS	`Sequence in context: A155007 A140121 A102770 this_sequence A058274 A124965 A107178` `Adjacent sequences: A058270 A058271 A058272 this_sequence A058274 A058275 A058276`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 08 2000`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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