OFFSET
0,3
COMMENTS
The height of a term in A005132 = number of addition steps - number of subtraction steps to produce it.
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 26 2001
EXTENSIONS
a(0)=0 added by N. J. A. Sloane, May 01 2020
STATUS
approved