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A091456 Least number k such that n * phi(k) < k, where phi is Euler's totient function. +0
2
2, 6, 30, 210, 30030, 223092870, 13082761331670030, 3217644767340672907899084554130, 1492182350939279320058875736615841068547583863326864530410 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A000010, A054741.

Cf. A091456 (n * phi(k) <= k).

Adjacent sequences: A091453 A091454 A091455 this_sequence A091457 A091458 A091459

Sequence in context: A083002 A077176 A101178 this_sequence A108204 A088160 A112317

KEYWORD

nonn

AUTHOR

Robert G. Wilson (rgwv(AT)rgwv.com), Jan 10 2004

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.


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