OFFSET
0,8
COMMENTS
Appears to be equal to the number of positive roots for x-cos(nx)=0. - Yuriy Sibirmovsky, Sep 11 2016
LINKS
Eric Weisstein's World of Mathematics, Griewank Function
EXAMPLE
Minima occur at 0 and near +/- 6.28005, 12.5601, 18.8401, 25.1202, ...
MATHEMATICA
A = Table[{n, CountRoots[x - Cos[n x], {x, 0, Infinity}]}, {n, 0, 108}]; (* (!) Conjecture, may not be correct for larger n (!) Yuriy Sibirmovsky, Sep 11 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Dec 27 2010
STATUS
approved