id:A083794 - OEIS Search Results

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Numbers n such that tau(n) is different from t(n-1), where tau(m) = number of divisors of m.

+0
2

1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 36, 37, 38, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 82 (list; graph; listen)

	OFFSET	`1,2`
	MAPLE	with(numtheory): for n from 1 to 150 do if tau(n) <> tau(n-1) then printf(`%d, `, n) fi: od:
	CROSSREFS	`Cf. A083795.` `Adjacent sequences: A083791 A083792 A083793 this_sequence A083795 A083796 A083797` `Sequence in context: A004722 A094798 A083792 this_sequence A133016 A026503 A052405`
	KEYWORD	`easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 07 2003`
	EXTENSIONS	`More terms and Maple code from James A. Sellers (sellersj(AT)math.psu.edu), May 19, 2003`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

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