Array of a(n)=a(n-1)*k-((k-1)/(k^n)) where a(0)=1 and k=(sqrt(x^2-1)+x)^2 for integers x>=1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =13a(5) =1a(6) =1a(7) =181a(8) =33a(9) =1a(10) =1a(11) =2521a(12) =1121a(13) =61a(14) =1a(15) =1a(16) =35113a(17) =38081a(18) =3781a(19) =97a(20) =1a(21) =1a(22) =489061a(23) =1293633a(24) =234361a(25) =9505a(26) =141a(27) =1a(28) =1a(29) =6811741