OFFSET
0,2
COMMENTS
See Rowell (2015) for precise definition.
LINKS
Jonathan T. Rowell, Solution Sequences for the Keyboard Problem and its Generalizations, Journal of Integer Sequences, Vol. 18 (2015), Article 15.10.7. See Table 2.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 17 2016
STATUS
approved