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A072050 Smallest solution to GCD(x,A004086(x))=7^n. 1
7, 18718, 343, 125204947, 231012215, 11298657013, 211066659013, 117088913464607, 2846847905744815 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = A069554(7^n)

MATHEMATICA

See A071686.

CROSSREFS

Cf. A004086, A055483, A069554, A071686, A072005, A072021.

Sequence in context: A134645 A115997 A013786 * A201037 A156169 A158898

Adjacent sequences:  A072047 A072048 A072049 * A072051 A072052 A072053

KEYWORD

more,nonn,base

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jun 10 2002

EXTENSIONS

a(8), a(9) from Max Alekseyev (maxale(AT)gmail.com), Jun 17 2011

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Last modified February 16 13:02 EST 2012. Contains 205909 sequences.