id:A078705 - OEIS Search Results

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Integer part of the square root of sigma(n).

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1, 1, 2, 2, 2, 3, 2, 3, 3, 4, 3, 5, 3, 4, 4, 5, 4, 6, 4, 6, 5, 6, 4, 7, 5, 6, 6, 7, 5, 8, 5, 7, 6, 7, 6, 9, 6, 7, 7, 9, 6, 9, 6, 9, 8, 8, 6, 11, 7, 9, 8, 9, 7, 10, 8, 10, 8, 9, 7, 12, 7, 9, 10, 11, 9, 12, 8, 11, 9, 12, 8, 13, 8, 10, 11, 11, 9, 12, 8, 13, 11, 11, 9, 14, 10, 11, 10, 13, 9, 15, 10, 12, 11 (list; graph; listen)

	OFFSET	`1,3`
	MATHEMATICA	`Table[Floor[Sqrt[DivisorSigma[1, i]]], {i, 1, 100}]`
	CROSSREFS	`Sequence in context: A133801 A112310 A137734 this_sequence A050331 A128435 A026903` `Adjacent sequences: A078702 A078703 A078704 this_sequence A078706 A078707 A078708`
	KEYWORD	`easy,nonn`
	AUTHOR	`Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Dec 18 2002`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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