Pisot sequence E(4,25): a(n) = floor(a(n-1)^2/a(n-2)+1/2) for n>1, a(0)=4, a(1)=25.

A010909

Pisot sequence E(4,25): a(n) = floor(a(n-1)^2/a(n-2)+1/2) for n>1, a(0)=4, a(1)=25.

Terms

    a(0) =4a(1) =25a(2) =156a(3) =973a(4) =6069a(5) =37855a(6) =236118a(7) =1472770a(8) =9186303a(9) =57298942a(10) =357398265a(11) =2229247441a(12) =13904779737a(13) =86730120658a(14) =540973246008

External references