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A240074 Index of the first superabundant number k having abundance >= n. 0
1, 4, 11, 23, 43, 82, 149, 278, 471, 853, 1378, 2594, 4474, 7999, 15747, 27458, 48615, 84320, 166806, 297146, 544525, 973799 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Sequence A004394 has a link to a file containing the first 10^6 superabundant numbers. Sequence A023199 lists the first 9 numbers.
LINKS
FORMULA
a(n) = least k such that A004394(k) > n*k.
CROSSREFS
Cf. A004394 (superabundant numbers), A023199.
Sequence in context: A173702 A244281 A014242 * A008181 A008214 A008104
KEYWORD
nonn,more,hard
AUTHOR
T. D. Noe, Apr 09 2014
STATUS
approved

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)