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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177368 Count the digits of the previous terms and describe nonzero counts, digits in ascending order, concatenating the count and the digit. Initial term is 9 10
9, 19, 1129, 311239, 51222349, 615233141559, 91625324451669, 111826344654689, 14192737475762899, 161112839485864738129, 211132103114951065778149, 202911521231341151167788169, 3038119214314413513697108189, 50461202193174145146107138219, 80541232213214165166127148239 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For a Mathematica program, see A177360 (you have to slightly modify it) [From Jasper Mulder (jasper.mulder(AT)planet.nl), Jun 04 2010]

LINKS

J. Mulder, Table of n, a(n) for n = 1..25000

EXAMPLE

Nine; one nine; 1129=one one, two nines; 311239=three ones, one two, three nines; 51222349=five ones, two twos, two threes, four nines; six ones, five twos, three threes, one four, one five, five nines; etc.

CROSSREFS

Cf. A060857, A177359 - A177367

Sequence in context: A248305 A089565 A001154 * A138493 A022513 A156746

Adjacent sequences:  A177365 A177366 A177367 * A177369 A177370 A177371

KEYWORD

easy,nonn,base

AUTHOR

Paolo P. Lava and Giorgio Balzarotti, May 10 2010

EXTENSIONS

Terms corrected using values in b-file. - N. J. A. Sloane, Oct 05 2010

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 February 29 08:26 EST 2020. Contains 332355 sequences. (Running on oeis4.)