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!)
A112457 a(1)=1; a(n+1)=desc(a(n))+a(n), where desc(x) is the description of x as in A005150. 0
1, 12, 1124, 212338, 1211334656, 1112213525496172, 31221113152327355441607884, 1311223113111543352330284851467051780698, 111321221321133115142315123621344927293054493947386362638861942616 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Example a(2)=11+1=12, a(3)=1112+12=1124.

PROG

(Perl) #!/usr/bin/perl -l use strict; use warnings; use bigint; $_=1; { print my $o=$_; s/((\d)\2*)/(length $1).$2/ge; $_+=$o; <>, redo; } __END__

CROSSREFS

Cf. A109229.

Sequence in context: A004073 A109229 * A091782 A291952 A112580 A229691

Adjacent sequences:  A112454 A112455 A112456 * A112458 A112459 A112460

KEYWORD

base,easy,nonn

AUTHOR

Michele Dondi (blazar(AT)lcm.mi.infn.it), Sep 06 2005

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 October 3 22:17 EDT 2022. Contains 357237 sequences. (Running on oeis4.)