1,3

There are exactly 9 such n's that 3^n uses only distinct digits (in base 10).

Table of n, a(n) for n=1..9.

9 is (the last!) term because 3^9=19683 uses only distinct digits.

Sequence in context: A243369 A228052 A308072 * A021085 A031006 A031978

Adjacent sequences: A084686 A084687 A084688 * A084690 A084691 A084692

fini,nonn,full,base

Zak Seidov, Jul 01 2003

approved