A113627 a(n) is the smallest number k such that k and 2^k have the same last n digits. Here k may have fewer than n digits and can be padded with leading zeros (cf. A121319).

14, 36, 736, 8736, 48736, 948736, 2948736, 32948736, 432948736, 3432948736, 53432948736, 353432948736, 5353432948736, 75353432948736, 75353432948736, 5075353432948736, 15075353432948736, 615075353432948736, 8615075353432948736, 98615075353432948736, 98615075353432948736

Offset

1,1

Links

Jon E. Schoenfield, Table of n, a(n) for n = 1..81

Example

2^14 = 16384 and 14 end with the same single digit 4, thus a(1) = 14.

Crossrefs

See A121319, the main entry for this sequence, for further information.

Same as A109405 except for the initial term (14). - Max Alekseyev, May 11 2007

Cf. A007185, A016090, A003226, A035383, A064540, A064541, A109405, A121319, A206636.

Sequence in context: A058486 A279900 A263125 * A121319 A361994 A034181

Adjacent sequences: A113624 A113625 A113626 * A113628 A113629 A113630

Keyword

nonn,base

Author

Jon E. Schoenfield, Apr 23 2007

Status

approved