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n+[nr/s]+[nt/s]; r=1, s=arctan(1/3), t=arctan(3).
2

%I #4 Mar 30 2012 18:57:26

%S 7,15,23,31,39,47,55,63,70,79,87,95,103,111,119,127,134,142,151,159,

%T 167,175,183,191,199,206,214,223,231,239,247,255,263,270,278,286,294,

%U 303,311,319,327,335,342,350,358,366,375,383,391,399,406,414,422,430,438,447,455,463,471,478,486,494,502,510,519,527,535,542,550

%N n+[nr/s]+[nt/s]; r=1, s=arctan(1/3), t=arctan(3).

%C See A189753.

%t (See A189753.)

%Y Cf. A189753, A189755.

%K nonn

%O 1,1

%A _Clark Kimberling_, Apr 26 2011