OFFSET
2,18
LINKS
David A. Corneth, Table of n, a(n) for n = 2..10001
David A. Corneth, PARI program
Thomas Kantke, Das Spiel Minimum und die Zerlegung natürlicher Zahlen, Mathematische Unterhaltungen, Spectrum der Wissenschaft, April 1993, pp. 11-13.
EXAMPLE
From David A. Corneth, Jun 05 2020: (Start)
For n = 19 we get to 2 via
n := 19 - 1 = 2 (+1 point as we subtract 1 from n)
n := 18/3 = 6 (+0 point as we divide by a divisor)
n := 6/2 = 3 (+0 point, we divide by a divisor. we can't divide by 3 as 3 > sqrt(6)).
n := 3 - 1 = 2 (+1 point; steps end here; we have n = 2)
We earned 2 points in these steps. As this is the minimal number of points starting at n = 19, a(19) = 2. (End)
PROG
(PARI) \\ see Corneth link \\ David A. Corneth, Jun 05 2020
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Thomas Kantke (bytes.more(AT)ibm.net)
EXTENSIONS
More terms from David W. Wilson
STATUS
approved