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A112974 Number of superabundant numbers between two consecutive colossally abundant numbers. 3
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; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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), A189228 (superabundant numbers that are not colossally abundant).

Sequence in context: A245251 A177461 A201924 * A113069 A136163 A178313

Adjacent sequences:  A112971 A112972 A112973 * A112975 A112976 A112977

KEYWORD

nonn

AUTHOR

T. D. Noe, Oct 07 2005

STATUS

approved

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Last modified July 25 19:34 EDT 2021. Contains 346291 sequences. (Running on oeis4.)