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A274290
Arising in solving the keyboard problem.
0
1, 8, 15, 21, 27, 34, 40, 46
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
Sequence in context: A082867 A075713 A374476 * A328410 A089025 A088977
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 17 2016
STATUS
approved