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

Author

Daniel Mondot, Sep 17 2010

Keywords

• base
• nonn

Links

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

Crossrefs

Cf. A180690, A180691, A180694

Programs

Mathematica

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 *)