A246440 - OEIS

A246440

Nonnegative integers k satisfying cos(k) > sec(k+1).

1, 2, 3, 7, 8, 9, 14, 15, 16, 20, 21, 22, 26, 27, 28, 32, 33, 34, 35, 39, 40, 41, 45, 46, 47, 51, 52, 53, 58, 59, 60, 64, 65, 66, 70, 71, 72, 76, 77, 78, 79, 83, 84, 85, 89, 90, 91, 95, 96, 97, 102, 103, 104, 108, 109, 110, 114, 115, 116, 120, 121, 122, 123

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OFFSET

1,2

COMMENTS

k is taken in radians.

Also, the nonnegative integers k satisfying sin(k) > sec(k+1).

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..1000

MATHEMATICA

z = 200;

Select[Range[0, z], Cos[#] > Sec[# + 1] &] (* A246440 *)

Select[Range[0, z], Cos[#] < Sec[# + 1] &] (* A246441 *)