login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A113764 Nondecreasing sequence of integers where each digit d is part of a group of d identical digits. 0
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 12, 23, 33, 44, 44, 55, 55, 56, 66, 66, 67, 77, 77, 77, 88, 88, 88, 88, 99, 99, 99, 99, 912, 2333, 4444, 5555, 5666, 6667, 7777, 7788, 8888, 8899, 9999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

Take integer 23, for example; its digit 2 is part of a group of 2 identical digits (though belonging to two consecutive integers): ...12,23,33,44... The same can be said for the digit 3 in 23.

CROSSREFS

Sequence in context: A087836 A087845 A130146 * A130148 A196238 A087843

Adjacent sequences:  A113761 A113762 A113763 * A113765 A113766 A113767

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, Jan 18 2006

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 22 22:16 EST 2020. Contains 331166 sequences. (Running on oeis4.)