A037220 Summarize the previous term!.

0, 10, 1011, 1031, 102113, 10311213, 10411223, 1031221314, 1041222314, 1031321324, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314, 1031223314

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base
• easy

Examples

			a(0) is given as 0;
a(1) is one zero -> 10;
a(2) is one zero and one one -> 1011;
a(3) is one zero and three ones -> 1031;
a(7) and onward is 1031223314.
		

Crossrefs

Cf. A005151.

Programs

Mathematica

NestList[ FromDigits@ Flatten@ Map[IntegerDigits@ Reverse@# &, Sort@ Tally@ Flatten@ IntegerDigits@#] &, 0, 20] (* Robert G. Wilson v, Nov 28 2019, adapted from code by Michael De Vlieger in A177359 *)