OFFSET
1,2
REFERENCES
J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 83, p. 29, Ellipses, Paris 2008. Also Entry 137, p. 47.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..100
EXAMPLE
1/cos(1) = 1.850815..., 2/cos(2) = -4.805995..., 4/cos(4) = -6.119542...
MAPLE
a:= evalf(1/cos(1)); for n from 2 to 10000000 do; if a > evalf(n/cos(n)) then a:= evalf(n/cos(n)); print(n); else fi ; od;
MATHEMATICA
s = {1}; rm = 1/Cos[1]; Do[r = n/Cos[n]; If[r < rm, rm = r; AppendTo[s, n]], {n, 2, 2*10^4}]; s (* Amiram Eldar, Aug 11 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, Feb 03 2010
EXTENSIONS
a(35) corrected by Amiram Eldar, Aug 11 2019
STATUS
approved