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A332480
Numbers k such that sin(k) > 0 and cos(k) > 0.
8
1, 7, 13, 14, 19, 20, 26, 32, 38, 39, 44, 45, 51, 57, 58, 63, 64, 70, 76, 82, 83, 88, 89, 95, 101, 102, 107, 108, 114, 120, 126, 127, 132, 133, 139, 145, 146, 151, 152, 158, 164, 170, 171, 176, 177, 183, 189, 190, 195, 196, 202, 208, 214, 215, 220, 221, 227
OFFSET
1,2
COMMENTS
The sequences A332480-A332483 partition the positive integers.
Subsequence of A327422, where sin(k)*cos(k)>0. - R. J. Mathar, Apr 27 2020
MATHEMATICA
Select[Range[300], Sin[#] > 0 && Cos[#] > 0 &] (* A332480 *)
Select[Range[300], Sin[#] > 0 && Cos[#] < 0 &] (* A332481 *)
Select[Range[300], Sin[#] < 0 && Cos[#] > 0 &] (* A332482 *)
Select[Range[300], Sin[#] < 0 && Cos[#] < 0 &] (* A332483 *)
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 14 2020
STATUS
approved