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A066675 a(n) = A066674(n)-1 divided by the n-th prime. 7
1, 2, 2, 4, 2, 4, 6, 10, 2, 2, 10, 4, 2, 4, 6, 2, 12, 6, 4, 8, 4, 4, 2, 2, 4, 6, 6, 6, 10, 2, 4, 2, 6, 4, 8, 6, 10, 4, 14, 2, 2, 6, 2, 4, 18, 4, 10, 12, 24, 12, 2, 2, 6, 2, 6, 6, 8, 6, 4, 2, 6, 2, 4, 6, 6, 26, 6, 10, 6, 10, 14, 2, 6, 4, 12, 12, 24, 6, 8, 4, 2, 10, 2, 4, 10, 2, 8, 30, 6, 12, 6, 8, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Is this a duplicate of A035096? - R. J. Mathar, Dec 15 2008

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = min{m : phi(m) == 0 (mod p(n))} = min{m : A000010(m) == 0 (mod A000040(n))}.

CROSSREFS

Cf. A000010, A000040, A035096, A066674, A066675, A066676, A066677, A066678.

Sequence in context: A170905 A233761 A035096 * A219433 A274879 A222043

Adjacent sequences:  A066672 A066673 A066674 * A066676 A066677 A066678

KEYWORD

nonn

AUTHOR

Labos Elemer, Dec 19 2001

EXTENSIONS

a(2) corrected by R. J. Mathar, Dec 15 2008

STATUS

approved

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Last modified April 13 20:46 EDT 2021. Contains 342941 sequences. (Running on oeis4.)