A022513 Describe previous term from the right (method A - initial term is 9).

9, 19, 1911, 211911, 21192112, 122112192112, 122112191112212211, 2122112231191112212211, 21221122311921132221221112, 12312211321321121921132221221112

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 1911 is obtained by saying "two 1's, one 9, one 1", which gives 211911.

Crossrefs

Cf. A005150, A022506, A006711, A022482, A022507-A022512.

Sequence in context: A001154 A177368 A138493 * A156746 A064266 A284053

Adjacent sequences: A022510 A022511 A022512 * A022514 A022515 A022516

Keyword

nonn,base,easy,nice

Author

N. J. A. Sloane

Extensions

More terms from Erich Friedman

Status

approved