cp's OEIS Frontend

A186321 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f and g are the squares and heptagonal numbers. Complement of A186320.

%I A186321 #4 Mar 30 2012 18:57:18
%S A186321 2,4,7,9,12,15,17,20,22,25,27,30,33,35,38,40,43,45,48,51,53,56,58,61,
%T A186321 64,66,69,71,74,76,79,82,84,87,89,92,95,97,100,102,105,107,110,113,
%U A186321 115,118,120,123,126,128,131,133,136,138,141,144,146,149,151,154,156,159,162,164,167,169,172,175,177,180,182,185,187,190,193,195,198,200
%N A186321 Adjusted joint rank sequence of (f(i)) and (g(j)) with f(i) before g(j) when f(i)=g(j), where f and g are the squares and heptagonal numbers.  Complement of A186320.
%e A186321 First, write
%e A186321 1..4...9..16....25...36...49...64.. (squares)
%e A186321 1....7.......18....34........55.... (heptagonal)
%e A186321 Replace each number by its rank, where ties are settled by ranking the square number before the heptagonal:
%e A186321 a=(1,3,5,6,8,10,11,13,...)=A186320
%e A186321 b=(2,4,7,9,12,15,17,20,...)=A186321.
%t A186321 (See A186320.)
%Y A186321 Cf. A186320, A186322, A186323.
%K A186321 nonn
%O A186321 1,1
%A A186321 _Clark Kimberling_, Feb 17 2011