id:A112974 - OEIS Search Results

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Number of superabundant numbers between two consecutive colossally abundant numbers.

+0
2

1, 0, 3, 0, 2, 4, 0, 4, 6, 0, 2, 3, 6, 8, 6, 0, 10, 10, 5, 2, 11, 9, 10, 0, 9, 10, 12, 4, 13, 14, 15, 11, 6, 14, 0, 12, 2, 12, 11, 5, 10, 11, 12, 12, 12, 11, 11, 13, 13, 0, 15, 14, 3, 14, 16, 16, 8, 16, 17, 17, 19, 20, 16, 14, 7, 16, 2, 16, 14, 15, 3, 15, 15, 14, 18, 0, 16, 16, 16, 16, 16, 14 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`The colossally abundant numbers are a subset of the superabundant abundant numbers. Is there a formula for a(n) that depends on the two consecutive colossally abundant numbers A004490(n) and A004490(n+1)?`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000`
	EXAMPLE	`a(3)=3 because between colossally abundant numbers 12 and 60 there are three superabundant numbers: 24, 36 and 48.`
	CROSSREFS	`Cf. A004490 (colossally abundant numbers), A004394 (superabundant numbers).` `Sequence in context: A112455 A001608 A159977 this_sequence A113069 A136163 A058624` `Adjacent sequences: A112971 A112972 A112973 this_sequence A112975 A112976 A112977`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Oct 07 2005`

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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.

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