OFFSET
1,1
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
Thomas Kantke, Das Spiel Minimum und die Zerlegung natürlicher Zahlen, Mathematische Unterhaltungen, Spectrum der Wissenschaft, April 1993, pp. 11-13.
EXAMPLE
19 has value 2 since by adding 1 we reach 20 which has value 1; there is no cheaper way to reach 2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Thomas Kantke (bytes.more(AT)ibm.net)
EXTENSIONS
More terms from David W. Wilson
STATUS
approved