

A321485


Describe n from left to right in terms of blocks with the maximum number of repetitions (and then with the maximum size).


2



10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 110, 21, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 22, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 23, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 24, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,1


COMMENTS

This sequence is a variant of the "Look and Say" sequence A045918 with features from Gijswijt's sequence A090822.
Any digit appearing in n also appears in a(n).


LINKS



FORMULA

a((10^k1)/9 * d) = 10*k + d for any k > 0 and d = 1..9.


EXAMPLE

The following table shows some examples with the corresponding blocks:
n a(n) Blocks
  
0 10 (0)
1 11 (1)
12 112 (12)
100 1100 (100)
111 31 (111)
22123 221123 (22)(123)
112211 212221 (11)(22)(11)
212212 2212 (212212)
11221122 21122 (11221122)


PROG

(PARI) See Links section.


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



