A372456 - OEIS

%I #25 Jun 12 2024 17:05:07

%S 1,1,0,1,1,0,0,1,0,0,1,0,0,1,0,0,1,1,0,1,1,0,1,1,0,1,1,0,0,1,0,0,1,0,

%T 0,1,0,0,1,1,0,1,1,0,1,1,0,1,1,0,0,1,0,0,1,0,0,1,0,0,1,1,0,1,1,0,1,1,

%U 0,1,1,0,0,1,0,0,1,0,0,1,0,0,1,1,0,1,1

%N a(n) = 1 if abs(tan(n)) > 1, 0 otherwise.

%H Amiram Eldar, <a href="/A372456/b372456.txt">Table of n, a(n) for n = 1..10000</a>

%e For n = 43, tan(43) = -1.498387339..., and abs(-1.498387339...) > 1, so a(43) = 1.

%t Table[Boole[Abs[Tan[n]] > 1], {n, 1, 100}] (* _Amiram Eldar_, May 02 2024 *)

%o (PARI) a(n) = abs(tan(n)) > 1; \\ _Michel Marcus_, May 01 2024

%Y Cf. A126565, A126564, A330035.

%K nonn,easy

%O 1,1

%A _Ahmad J. Masad_, May 01 2024