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A117074
Number at start of segment n of A117073.
1
1, 4, 9, 20, 40, 82, 166, 334, 670, 1340, 2682, 5366, 10734, 21470, 42942, 85886, 171774
OFFSET
1,2
REFERENCES
N. J. A. Sloane and Allan Wilks, On sequences of Recaman type, paper in preparation, 2006.
CROSSREFS
Sequence in context: A268235 A192956 A023607 * A072934 A084639 A272268
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 17 2006
STATUS
approved