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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A033564 a(n+1) = concatenation of a(n) and a(n)+1, with a(0)=1. 3
1, 12, 1213, 12131214, 1213121412131215, 12131214121312151213121412131216, 1213121412131215121312141213121612131214121312151213121412131217 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The next term is too large to be included in the DATA section. - N. J. A. Sloane, Oct 20 2021

LINKS

Table of n, a(n) for n=0..6.

MATHEMATICA

NestList[FromDigits[Join[IntegerDigits[#], IntegerDigits[#+1]]]&, 1, 6] (* Jayanta Basu, May 20 2013 *)

CROSSREFS

Sequence in context: A177090 A103269 A317955 * A301474 A054351 A080814

Adjacent sequences: A033561 A033562 A033563 * A033565 A033566 A033567

KEYWORD

nonn,base

AUTHOR

Wolfgang Scheufele (ws(AT)pi3.informatik.uni-mannheim.de)

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 December 6 10:03 EST 2022. Contains 358630 sequences. (Running on oeis4.)