id:A058272 - OEIS Search Results

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

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1, 6, 16, 38, 56, 110, 130, 219, 259, 378, 402, 641, 610, 869, 943, 1243, 1192, 1728, 1574, 2199, 2167, 2678, 2537, 3644, 3181, 4062, 4047, 5050, 4529, 6283, 5351, 7036, 6673, 7938, 7433, 10034, 8328, 10481, 10124, 12499, 10764, 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	`Adjacent sequences: A058269 A058270 A058271 this_sequence A058273 A058274 A058275` `Sequence in context: A048487 A124699 A064602 this_sequence A049712 A092274 A130902`
	KEYWORD	`nonn`
	AUTHOR	`njas, Dec 08 2000`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

AT&T Labs Research