A062526 9^a(n) is smallest power of 9 containing the string 'n'.

5, 0, 3, 6, 5, 4, 4, 3, 2, 1, 11, 15, 18, 11, 6, 18, 17, 19, 13, 23, 9, 8, 14, 21, 12, 13, 26, 28, 12, 3, 8, 6, 13, 24, 10, 18, 12, 27, 9, 27, 10, 6, 9, 8, 6, 14, 8, 7, 9, 5, 18, 16, 18, 6, 13, 35, 4, 20, 13, 5, 11, 4, 23, 18, 12, 4, 17, 8, 24, 7, 22, 17, 3, 26, 9, 30

Offset

0,1

Comments

Table[k = 0; While[ StringPosition[ ToString[9^k], ToString[n] ] == {}, k++ ]; k, {n, 0, 75} ]

Links

Table of n, a(n) for n=0..75.

Crossrefs

Cf. A030000.

Sequence in context: A200399 A161485 A326054 * A264785 A197573 A019947

Adjacent sequences: A062523 A062524 A062525 * A062527 A062528 A062529

Keyword

base,nonn

Author

Robert G. Wilson v, Jun 24 2001

Status

approved