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A072050 Smallest solution to GCD(x,A004086(x))=7^n. 4
7, 18718, 343, 125204947, 231012215, 11298657013, 211066659013, 117088913464607, 2846847905744815, 108244538579770418, 2080795357577501075, 18312871825384462928, 26268977180287044053417, 1734582041294009627423816 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = A069554(7^n).
MATHEMATICA
See A071686.
CROSSREFS
Sequence in context: A013786 A351326 A285178 * A249765 A201037 A300200
KEYWORD
nonn,base,more
AUTHOR
Labos Elemer, Jun 10 2002
EXTENSIONS
a(8)-a(9) from Max Alekseyev, Jun 17 2011
a(10)-a(14) from Giovanni Resta, Oct 30 2019
STATUS
approved

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Last modified April 21 16:35 EDT 2024. Contains 371874 sequences. (Running on oeis4.)