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A283245 Square root of the smallest square referenced in A280296 (Squarefree numbers n such that 2^n - 1 is divisible by a square > 1). 1
3, 7, 3, 3, 3, 3, 3, 7, 11, 3, 3, 31, 3, 3, 3, 3, 7, 3, 23, 3, 7, 3, 31, 3, 3, 3, 7, 3, 3, 7, 3, 3, 3, 3, 31, 3, 7, 23, 3, 3, 3, 3, 3, 43, 3, 7, 3, 3, 7, 3, 3, 3, 3, 23, 3, 11, 7, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
A280296(1)=6, 2^6-1 = 63 = 3*3*7, so 63 is not squarefree the square being 3*3=9 and the root is 3.
CROSSREFS
Sequence in context: A135613 A019973 A010623 * A066065 A145511 A242461
KEYWORD
nonn
AUTHOR
Robert Price, Mar 06 2017
STATUS
approved

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Last modified May 23 07:28 EDT 2024. Contains 372760 sequences. (Running on oeis4.)