id:A063038 - OEIS Search Results

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Floor(n*sqrt(n))- d(n), where d(n) is the number of divisors function.

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0, 0, 3, 5, 9, 10, 16, 18, 24, 27, 34, 35, 44, 48, 54, 59, 68, 70, 80, 83, 92, 99, 108, 109, 122, 128, 136, 142, 154, 156, 170, 175, 185, 194, 203, 207, 223, 230, 239, 244, 260, 264, 279, 285, 295, 307, 320, 322, 340, 347, 360, 368, 383, 388, 403, 411, 426, 437 (list; graph; listen)

	OFFSET	`1,3`
	PROGRAM	`(PARI) j=[]; for(n=1, 100, j=concat(j, floor(n*sqrt(n))-numdiv(n))); j`
	CROSSREFS	`Cf. A055682.` `Sequence in context: A081500 A030365 A153710 this_sequence A066769 A088607 A162699` `Adjacent sequences: A063035 A063036 A063037 this_sequence A063039 A063040 A063041`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Aug 03 2001`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research