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%I #8 Dec 05 2018 09:47:44
%S 6,12,18,24,30,36,42,48,54,60,67,73,79,85,91,97,103,109,115,121,128,
%T 134,140,146,152,158,164,170,176,182,188,195,201,207,213,219,225,231,
%U 237,243,249,256,262,268,274,280,286,292,298,304,310,316,323,329,335,341,347,353,359,365,371,377,384,390,396,402,408,414,420,426
%N a(n) = floor(r*n), where r = 1 + sqrt(7) + sqrt(6); complement of A187390.
%C A187389 and A187390 are the Beatty sequences based on r=1+sqrt(7)+sqrt(6) and s=1+sqrt(7)-sqrt(6); 1/r+1/s=1.
%F a(n)=floor(r*n), where r=1+sqrt(7)+sqrt(6).
%t k=7; r=1+k^(1/2)+(k-1)^(1/2); s=1+k^(1/2)-(k-1)^(1/2);
%t Table[Floor[r*n],{n,1,80}] (* A187389 *)
%t Table[Floor[s*n],{n,1,80}] (* A187390 *)
%Y Cf. A187390.
%K nonn
%O 1,1
%A _Clark Kimberling_, Mar 09 2011