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A082071 Least common prime-divisor of Phi[n]=A000010(n) and Sigma[2,n]=A001157(n); a(n)=1 if no common prime-divisor was found. 0
1, 1, 2, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Cf. A000010, A001157, A082061-A082072.

Sequence in context: A026513 A106028 A105307 * A082065 A082070 A082902

Adjacent sequences:  A082068 A082069 A082070 * A082072 A082073 A082074

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Apr 07 2003

EXTENSIONS

Values corrected by R. J. Mathar, Jul 09 2011

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.