OFFSET
1,2
COMMENTS
The sequence is not base dependent. Subsidiary sequences: (1) Indices of the digit n. (2) Indices of r occurrences of 1. (3) Indices of r occurrences of any digit k.
EXAMPLE
After 3 all numbers using 1 and 3 are placed in increasing order with digit multiplicity. Then all numbers using 2 and 3 are placed in increasing order then all numbers using 1,2,3 are placed in the same fashion. And the next term is 4.
CROSSREFS
KEYWORD
nonn,base,uned
AUTHOR
Amarnath Murthy, Jun 27 2004
STATUS
approved