OFFSET
0,4
FORMULA
a(n) = smallest number not equal to a(i) for some i representing a 1-bit in the binary expansion of n (least significant bit is 0th bit)
CROSSREFS
KEYWORD
nonn
AUTHOR
Joseph Shipman (shipman(AT)savera.com)
EXTENSIONS
More terms from David Wasserman, Jan 24 2002
STATUS
approved