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URL: https://oeis.org/A072050

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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
OFFSET
1,1
FORMULA
a(n) = A069554(7^n).
MATHEMATICA
(* See A071686. *)
CROSSREFS
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