OFFSET

0,3

COMMENTS

Could one say this is kind of fractal?

The definition seems to be the following: all terms have an odd number of digits, and are strictly increasing. Now delete all except the middle digits of each term. The result is the succession of digits of all the terms. We take the lexicographically earliest sequence satisfying these conditions. - N. J. A. Sloane, Aug 09 2012

CROSSREFS

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, Apr 29 2005

STATUS

approved