login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A126968 First digit of a(n) is the a(n)-th digit of S [a(n+1) is the smallest available integer not yet present in S]. 3
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 21, 14, 31, 22, 15, 16, 41, 32, 17, 23, 24, 18, 51, 19, 61, 42, 111, 33, 25, 112, 71, 26, 34, 27, 43, 113, 81, 52, 114, 115, 91, 62, 116, 44, 28, 117, 118, 119, 35, 36, 29, 53, 121, 122, 211, 72, 123, 212, 63, 37, 45 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
An example of what logologists call a "self-acronymic" sequence.
Except for the initial term, the sequence consists only of zeroless numbers A052382, since no other term can start with a digit 0. - M. F. Hasler, Jan 19 2015
LINKS
EXAMPLE
The first integer of S starts with the first digit of S: 0,
the second integer of S starts with the second digit of S: 1,
the third integer of S starts with the third digit of S: 2,
the fourth integer of S starts with the fourth digit of S: 3,
the fifth integer of S starts with the fifth digit of S: 4,
the sixth integer of S starts with the sixth digit of S: 5,
the 7th integer of S starts with the 7th digit of S: 6,
...
the 11th integer of S ("11") starts with the 11th dig. of S : 1,
the 12th integer of S ("12") starts with the 12th dig. of S : 1,
the 13th integer of S ("13") starts with the 13th dig. of S : 1,
the 14th integer of S ("21") starts with the 14th dig. of S : 2, ...
CROSSREFS
Cf. A126969.
Sequence in context: A072495 A257671 A285523 * A254785 A126969 A127274
KEYWORD
nonn,base
AUTHOR
Eric Angelini, Mar 22 2007
EXTENSIONS
Corrected and edited by Eric Angelini, Dec 05 2011
Corrected and extended by Hans Havermann, Jan 19 2015
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)