OFFSET
0,2
EXAMPLE
Applying the operation to the initial string "1" gives us "11". Subsequent iterations give us "1101" and "110111". The numerical values corresponding to the binary strings "1," "11," "1101," and "110111" are, of course, 1, 3, 13 and 55.
CROSSREFS
KEYWORD
nonn
AUTHOR
George J. Schaeffer (gschaeff(AT)andrew.cmu.edu), Jan 02 2005
STATUS
approved