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%I #11 Apr 09 2021 22:09:47
%S 2,4,8,10,12,16,18,20,24,26,28,32,34,36,40,42,44,48,50,52,56,58,60,64,
%T 66,68,72,74,76,80,82,84,88,90,92,96,98,100,104,106,108,112,114,116,
%U 120,122,124,128,130,132,136,138,140,144,146,148,152,154,156,160,162,164,168,170,172,176,178,180,184,186,188,192,194,196,200,202,204
%N a(n) = n + [nr/t] + [ns/t]; r=Pi/2, s=arcsin(5/13), t=arcsin(12/13).
%C See A189785.
%C Conjecture: Sequence consists of all the positive even numbers except numbers of the form 8*x+6, x >= 0. - _Harvey P. Dale_, Dec 07 2018
%t (See A189785.)
%t With[{t=ArcSin[12/13]},Table[n+Floor[(n*Pi/2)/t]+Floor[(n*ArcSin[5/13])/t],{n,80}]] (* _Harvey P. Dale_, Dec 07 2018 *)
%Y Cf. A189785, A189787.
%K nonn
%O 1,1
%A _Clark Kimberling_, Apr 27 2011
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