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A024657 n written in fractional base 10/2. 3
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 220, 221, 222, 223, 224, 225, 226, 227 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

To represent a number in base b, if a digit exceeds b, subtract b and carry 1. In fractional base a/b, subtract a and carry b.

Also numbers which are written the same in base 20/2 as in base 10. The sequence consists of numbers which have digits in {0,2,4,6,8} except that the unit digit can be any from {0,1,2,3,4,5,6,7,8,9} - Henry Bottomley, Nov 17 2000

a(n) = A118761(n+1) for n<50. - Reinhard Zumkeller, May 01 2006

LINKS

Table of n, a(n) for n=0..67.

CROSSREFS

Cf. A007091, A058185, A058186.

Cf. A102491.

Sequence in context: A102491 A111706 A118761 * A140281 A039077 A247803

Adjacent sequences:  A024654 A024655 A024656 * A024658 A024659 A024660

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)