A062522 5^a(n) is smallest nonnegative power of 5 containing the string 'n'.

8, 0, 2, 5, 11, 1, 4, 7, 7, 8, 14, 23, 3, 30, 12, 6, 20, 15, 22, 9, 13, 33, 13, 22, 12, 2, 18, 37, 11, 17, 15, 5, 19, 35, 19, 14, 20, 21, 18, 8, 12, 12, 37, 20, 12, 17, 18, 21, 11, 26, 23, 14, 16, 9, 30, 23, 6, 15, 16, 24, 24, 14, 4, 19, 20, 10, 31, 20, 21, 18, 13, 21, 18, 19, 20

Offset

0,1

Comments

Table[k = 0; While[ StringPosition[ ToString[5^k], ToString[n]] == {}, k++ ]; k, {n, 0, 75} ]

Links

Table of n, a(n) for n=0..74.

Crossrefs

Cf. A030000. Essentially the same as A063568.

Sequence in context: A329086 A342200 A265294 * A117888 A331542 A295330

Adjacent sequences: A062519 A062520 A062521 * A062523 A062524 A062525

Keyword

base,nonn

Author

Robert G. Wilson v, Jun 24 2001

Status

approved