A174209 - OEIS

A174209

In the sequence of natural numbers, moving left to right, delete 1st, 3rd, 5th, 7th etc occurrence of each of the ten digits.

10, 1, 2, 13, 4, 15, 6, 17, 8, 19, 2, 2, 2, 2, 2, 30, 1, 32, 3, 4, 35, 6, 37, 8, 39, 4, 4, 4, 4, 4, 50, 1, 52, 3, 54, 5, 6, 57, 8, 59, 6, 6, 6, 6, 6, 70, 1, 72, 3, 74, 5, 76, 7, 8, 79, 8, 8, 8, 8, 8, 90, 1, 92, 3, 94, 5, 96, 7, 98, 9, 0, 10, 1, 0, 1, 0, 1, 0, 1, 0, 1, 11, 12, 13, 14, 15, 16, 17

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

Table of n, a(n) for n=0..87.

EXAMPLE

Starting from

0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,1,20,21,22,23,24,25,26,27,28,29,..

Delete odd occurrences of digit 0 (replaced by ~):

,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,2~,21,22,23,24,25,26,27,28,29,..

Delete odd occurrences of digit 1 (replaced by ~):

,~,2,3,4,5,6,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,2~,2~,22,23,24,25,26,27,28,29 ,..

Delete odd occurrences of digit 2 (replaced by ~):

,~,~,3,4,5,6,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~3,24,~5,26,~7,28,~9 ,..

Delete odd occurrences of digit 3 (replaced by ~):

,~,~,~,4,5,6,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,24,~5,26,~7,28,~9,..

Delete odd occurrences of digit 4 (replaced by ~):

,~,~,~,~,5,6,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~5,26,~7,28,~9,..

Delete odd occurrences of digit 5 (replaced by ~):

,~,~,~,~,~,6,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~~,26,~7,28,~9,..

Delete odd occurrences of digit 6 (replaced by ~):

,~,~,~,~,~,~,7,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~~,2~,~7,28,~9,..

Delete odd occurrences of digit 7 (replaced by ~):

,~,~,~,~,~,~,~,8,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~~,2~,~~,28,~9,..

Delete odd occurrences of digit 8 (replaced by ~):

,~,~,~,~,~,~,~,~,9,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~~,2~,~~,2~,~9,..

Delete odd occurrences of digit 9 (replaced by ~):

,~,~,~,~,~,~,~,~,~,10,~1,~2,13,~4,15,~6,17,~8,19,~~,2~,~2,~~,2~,~~,2~,~~,2~,~~,..

The residual digits define the sequence: 10, 1, 2, 13, 4, 15, 6, 17, 8, 19, 2, 2, 2, 2, 2,....

CROSSREFS

Cf. A174203, A174204, A174205, A174206, A174207, A174208, A174210.

Sequence in context: A283393 A359736 A010179 * A366165 A010181 A111525

Adjacent sequences: A174206 A174207 A174208 * A174210 A174211 A174212

KEYWORD

easy,nonn,base

AUTHOR

Paolo P. Lava & Giorgio Balzarotti, Mar 15 2010

STATUS

approved