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

1,2

Links

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

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 *)

Crossrefs

Cf. A180690, A180691, A180694

Sequence in context: A082390 A011517 A000934 * A004710 A060257 A262874

Adjacent sequences: A180689 A180690 A180691 * A180693 A180694 A180695

Keyword

base,nonn

Author

Daniel Mondot, Sep 17 2010

Status

approved