A180694 -id:A180694 - cp's OEIS frontend

A180692 12^a(n) is smallest power of 12 beginning with n.

0, 4, 7, 8, 9, 10, 11, 12, 25, 13, 26, 1, 27, 2, 15, 28, 3, 16, 29, 4, 42, 17, 30, 5, 43, 18, 56, 31, 6, 44, 19, 57, 95, 32, 7, 45, 83, 20, 58, 134, 33, 8, 46, 84, 122, 21, 97, 135, 34, 72, 9, 47, 85, 123, 22, 60, 98, 136, 35, 73, 10, 149, 48, 86, 124, 23, 61, 200, 99, 36, 175, 74

Offset: 1

Daniel Mondot, Sep 17 2010

D. Mondot, Table of n, a(n) for n=1..32699

Cf. A180690, A180691, A180694

With[{p=12^Range[0,300]},Flatten[Table[Position[p,?(Take[ IntegerDigits[ #], IntegerLength[n]]==IntegerDigits[n]&),1,1],{n,80}]]]-1//Quiet (* _Harvey P. Dale, Mar 03 2018 *)

A180693 Smallest power of 13 that begins with n.

Original entry on oeis.org

1, 2197, 371293, 4826809, 51185893014090757, 62748517, 7056410014866816666030739693, 815730721, 91733330193268616658399616009, 10604499373, 112455406951957393129, 12646218552730347184269489080961456410641, 13, 1461920290375446110677, 15502932802662396215269535105521

Offset: 1

Daniel Mondot, Sep 18 2010

Robert Israel, Table of n, a(n) for n = 1..99

Cf. A180691, A180694, A180695.

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

a(n) = 13^A180694(n). - Michel Marcus, Jan 18 2016

A180696 14^a(n) is smallest power of 14 beginning with n.

Original entry on oeis.org

0, 3, 4, 11, 5, 26, 6, 20, 34, 7, 14, 28, 35, 1, 15, 22, 29, 36, 2, 9, 16, 23, 71, 30, 37, 44, 3, 10, 58, 17, 65, 24, 31, 120, 38, 86, 45, 4, 52, 11, 59, 18, 107, 25, 114, 73, 32, 121, 80, 39, 87, 46, 5, 94, 53, 12, 101, 60, 19, 108, 67, 26, 115, 204, 74, 33, 122, 81, 170, 40

Offset: 1

Daniel Mondot, Sep 18 2010

Daniel Mondot, Table of n, a(n) for n = 1..32699

Cf. A001023, A180694, A180695, A180698.

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A180692 12^a(n) is smallest power of 12 beginning with n.

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A180693 Smallest power of 13 that begins with n.

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A180696 14^a(n) is smallest power of 14 beginning with n.

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