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A022520 Describe previous term from the right (method B - initial term is 9). 8
9, 91, 1191, 119112, 21129112, 211291211221, 112212211191211221, 1122122111911322112212, 21112212223112911322112212, 21112212223112912112312311221321 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

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

EXAMPLE

E.g. the term after 1191 is obtained by saying "1 once, 9 once, 1 twice", which gives 119112.

CROSSREFS

Cf. A022481, A022488, A022514-A022519.

Sequence in context: A163456 A176735 A123792 * A020236 A068624 A034666

Adjacent sequences:  A022517 A022518 A022519 * A022521 A022522 A022523

KEYWORD

nonn,base,easy,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1999.

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.