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A186515 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) after g(j) when f(i)=g(j), where f(i)=i^2 and g(j)=4+5j^2. Complement of A186516.

%I A186515 #6 Mar 30 2012 18:57:19
%S A186515 1,2,4,5,7,8,10,11,12,14,15,17,18,20,21,23,24,26,27,28,30,31,33,34,36,
%T A186515 37,39,40,41,43,44,46,47,49,50,52,53,54,56,57,59,60,62,63,65,66,68,69,
%U A186515 70,72,73,75,76,78,79,81,82,83,85,86,88,89,91,92,94,95,96,98,99,101,102,104,105,107,108,109,111,112,114,115,117,118,120,121,123,124,125,127,128,130,131,133,134,136,137,138,140,141,143,144
%N A186515 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) after g(j) when f(i)=g(j), where f(i)=i^2 and g(j)=4+5j^2.  Complement of A186516.
%C A186515 See A186219 for a discussion of adjusted joint rank sequences.
%C A186515 The pairs (i,j) for which i^2=4+5j^2 are (L(2h),F(2h)), where L=A000032 (Lucas numbers) and F=A000045 (Fibonacci numbers).
%F A186515 a(n)=n+floor(sqrt((n^2)/5-7/10))=A186515(n).
%F A186515 b(n)=n+floor(sqrt(5n^2+7/2))=A186516(n).
%e A186515 First, write
%e A186515 1..4..9..16..25..36..49..... (i^2)
%e A186515 ......9.....24.......49.. (4+5j^2)
%e A186515 Then replace each number by its rank, where ties are settled by ranking i^2 after 4+5j^2:
%e A186515 a=(1,2,4,5,7,8,10,11,12,14,15,17,..)=A186515
%e A186515 b=(3,6,9,13,16,19,22,25,29,32,35,..)=A186516.
%t A186515 (* adjusted joint rank sequences a and b, using general formula for ranking ui^2+vi+w and xj^2+yj+z *)
%t A186515 d = -1/2; u = 1; v = 0; w = 0; x = 5; y = 0; z = 4;
%t A186515 h[n_] := -y + (4 x (u*n^2 + v*n + w - z - d) + y^2)^(1/2);
%t A186515 a[n_] := n + Floor[h[n]/(2 x)];
%t A186515 k[n_] := -v + (4 u (x*n^2 + y*n + z - w + d) + v^2)^(1/2);
%t A186515 b[n_] := n + Floor[k[n]/(2 u)];
%t A186515 Table[a[n], {n, 1, 100}]  (* A186515 *)
%t A186515 Table[b[n], {n, 1, 100}]  (* A186516 *)
%Y A186515 Cf. A186219, A186513, A186514, A186516.
%K A186515 nonn
%O A186515 1,2
%A A186515 _Clark Kimberling_, Feb 22 2011