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A116003 n*phi(n)*phi(phi(n)) is a fourth power. 0
1, 32, 512, 3888, 8192, 25000, 62208, 131072, 314928, 400000, 759375, 995328, 2097152, 2839714, 3037500 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
3888*phi(3888)*phi(phi(3888))=216^4.
CROSSREFS
Sequence in context: A297091 A371453 A271577 * A035711 A035477 A109384
KEYWORD
nonn
AUTHOR
Giovanni Resta, Feb 13 2006
STATUS
approved

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)