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Number of singularities of tan(x) in integer intervals starting with (0,1).
1

%I #11 Mar 31 2020 10:52:47

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

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

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

%N Number of singularities of tan(x) in integer intervals starting with (0,1).

%F For n>0, a(A062389(n)) = 1. - _Michel Marcus_, Aug 07 2013

%e a(0) = 0 because tan(x) has no singularities in the interval (0,1).

%e a(1) = 1 because tan(x) has one singularity in the interval (1,2).

%Y Cf. A163581.

%K nonn

%O 0,1

%A _A. Timothy Royappa_, Jul 31 2009

%E More terms from _Michel Marcus_, Aug 07 2013