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

9, 19, 1129, 311239, 51222349, 615233141559, 91625324451669, 111826344654689, 14192737475762899, 161112839485864738129, 211132103114951065778149, 202911521231341151167788169, 3038119214314413513697108189, 50461202193174145146107138219, 80541232213214165166127148239

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