A058185 Numbers (written in decimal) which appear the same when written in base 5 and base 10/2.

0, 1, 2, 3, 4, 10, 11, 12, 13, 14, 20, 21, 22, 23, 24, 50, 51, 52, 53, 54, 60, 61, 62, 63, 64, 70, 71, 72, 73, 74, 100, 101, 102, 103, 104, 110, 111, 112, 113, 114, 120, 121, 122, 123, 124, 250, 251, 252, 253, 254, 260, 261, 262, 263, 264, 270, 271, 272, 273, 274

Offset

0,3

Comments

To represent a number in base b, if a digit exceeds b, subtract b and carry 1. In fractional base b/c, subtract b and carry c. The sequence consists of numbers which in base 5 only have even digits, or one more than such numbers.

Links

Table of n, a(n) for n=0..59.

Example

10 appears since it is written as 20 both in base 5 and base 10/2. 40 does not since it is written as 130 in base 5 and 80 in base 10/2.

Crossrefs

Cf. A007091, A024657, A058186.

Sequence in context: A293292 A037469 A007091 * A080897 A117383 A047455

Adjacent sequences: A058182 A058183 A058184 * A058186 A058187 A058188

Keyword

base,nonn

Author

Henry Bottomley, Nov 17 2000

Status

approved