OFFSET
1,2
COMMENTS
Among the first 10000 terms the largest value is a(7898)=211111111111111111111111111110 and the smallest value not occurring is 29. - Lars Blomberg, Jan 10 2020
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..10000
EXAMPLE
The sequence's start is reordered herunder in two ways: the first one to check the runs of consecutive integers, the second one to check the runs of consecutive digits.
Start = 1,2,4,3,5,7,9,6,8,2111110,2000001,11,13,15,17,...
#1 Golomb's variation (integers):
1, ---------------> size 1 block of odd integers
2,4, -------------> size 2 block of even integers
3,5,7,9, ---------> size 4 block of odd integers
6,8,2111110, -----> size 3 block of even integers
2000001,11,13,15,17, size 5 block of odd integers
...
#2 Golomb's variation (digits):
Start = 1,2,4,3,5,7,9,6,8,2111110,2000001,11,13,15,17,...
1, ----> size 1 block of odd digits
2,4, --> size 2 block of even digits
3,5,7,9, size 4 block of odd digits
6,8,2 size 3 block of even digits
11111 size 5 block of odd digits
0,200000 size 7 block of even digits
In both variations, the successive sizes rebuild the sequence.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Lars Blomberg, Jan 05 2020
STATUS
approved