Let i be in {1,2,3,4} and r>=0 an integer. Let p ={p_1,p_2,p_3,p_4} = {-3,0,1,2}, n=3*r+p_i and define a(-3)=0. Then a(n)=a(3*r+p_i) gives the number of H_(9,3,0) tiles in a subdivided H_(9,i,r) tile after linear scaling by the factor Q^r, where Q=sqrt(2*cos(Pi/9)).

A187497

Let i be in {1,2,3,4} and r>=0 an integer. Let p ={p_1,p_2,p_3,p_4} = {-3,0,1,2}, n=3*r+p_i and define a(-3)=0. Then a(n)=a(3*r+p_i) gives the number of H_(9,3,0) tiles in a subdivided H_(9,i,r) tile after linear scaling by the factor Q^r, where Q=sqrt(2*cos(Pi/9)).