A022505 Describe the previous term! (method B - initial term is 9).

9, 91, 9111, 9113, 911231, 9112213111, 911222113113, 91122312311231, 9112223111213112213111, 91122331132111311222113113, 911222321231211331122312311231

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• base
• easy
• nice

Comments

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

Examples

			E.g., the term after 9113 is obtained by saying "9 once, 1 twice, 3 once", which gives 911231.
		

Crossrefs

Cf. A007651, A022470, A022499, A022500, A022501, A022502, A022503, A022504.

Extensions

a(12)-(14) needlessly added by Alvin Hoover Belt, Jan 31 2010