id:A067399 - OEIS Search Results

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Number of divisors of n in OR-numbral arithmetic.

+0
4

1, 2, 2, 3, 2, 4, 3, 4, 2, 4, 2, 6, 2, 6, 5, 5, 2, 4, 2, 6, 3, 4, 2, 8, 2, 4, 4, 9, 2, 10, 8, 6, 2, 4, 2, 6, 2, 4, 2, 8, 2, 6, 2, 6, 4, 4, 4, 10, 2, 4, 4, 6, 2, 8, 4, 12, 2, 4, 4, 15, 4, 16, 14, 7, 2, 4, 2, 6, 2, 4, 2, 8, 3, 4, 2, 6, 2, 4, 2, 10, 2, 4, 2, 9, 5, 4, 2, 8, 2, 8, 4, 6, 2, 8, 6, 12, 2, 4, 4, 6 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`See A048888 for the definition of OR-numbral arithmetic. Note that the example shows that A067399 is not multiplicative.`
	REFERENCES	`A. Frosini and S. Rinaldi, On the Sequence A079500 and Its Combinatorial Interpretations, Journal of Integer Sequences, Vol. 9 (2006), Article 06.3.1.`
	EXAMPLE	`A067399(15)=5 since [15] has the 5 OR-numbral divisors [1], [3], [5], [7] and [15].`
	CROSSREFS	`Cf. A003986, A007059, A048888, A067138, A067139, A067398, A067400, A067401.` `Sequence in context: A023522 A066241 A060025 this_sequence A106737 A062821 A162897` `Adjacent sequences: A067396 A067397 A067398 this_sequence A067400 A067401 A067402`
	KEYWORD	`nonn`
	AUTHOR	`Jens Voss (jens.voss(AT)poet.de), Jan 23 2002`

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

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