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!)
A022511 Describe previous term from the right (method A - initial term is 7). 0
7, 17, 1711, 211711, 21172112, 122112172112, 122112171112212211, 2122112231171112212211, 21221122311721132221221112, 12312211321321121721132221221112 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Method A = 'frequency' followed by 'digit'-indication.

LINKS

Table of n, a(n) for n=0..9.

EXAMPLE

E.g. the term after 1711 is obtained by saying "two 1's, one 7, one 1", which gives 211711.

CROSSREFS

Cf. A022506, A006711, A022482, A022507-A022513.

Sequence in context: A093139 A177366 A138491 * A113613 A070415 A034083

Adjacent sequences:  A022508 A022509 A022510 * A022512 A022513 A022514

KEYWORD

nonn,base,easy,nice

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Erich Friedman.

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 27 06:36 EST 2020. Contains 332299 sequences. (Running on oeis4.)