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 A180693 Smallest power of 13 that begins with n. 4
 1, 2197, 371293, 4826809, 51185893014090757, 62748517, 7056410014866816666030739693, 815730721, 91733330193268616658399616009, 10604499373, 112455406951957393129, 12646218552730347184269489080961456410641, 13, 1461920290375446110677, 15502932802662396215269535105521 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..99 FORMULA a(n) = 13^A180694(n). - Michel Marcus, Jan 18 2016 MAPLE count:= 1: A[1]:= 1: for n from 1 while count < 99 do x:= 13^n; m:= ilog10(x); for d from 0 to 1 do    y:= floor(x/10^(m-d));    if not assigned(A[y]) then      count:= count+1;      A[y]:= x;    fi od od: seq(A[i], i=1..99); # Robert Israel, Jan 17 2016 CROSSREFS Cf. A180691, A180694, A180695. Sequence in context: A109408 A202459 A017535 * A013799 A013868 A044884 Adjacent sequences:  A180690 A180691 A180692 * A180694 A180695 A180696 KEYWORD base,nonn AUTHOR Daniel Mondot, Sep 18 2010 STATUS approved

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