Denominator of 1/(n-2)^2 - 1/(n+2)^2.

Terms

a(0) =0a(1) =25a(2) =9a(3) =441a(4) =64a(5) =2025a(6) =225a(7) =5929a(8) =576a(9) =13689a(10) =1225a(11) =27225a(12) =2304a(13) =48841a(14) =3969a(15) =81225a(16) =6400a(17) =127449a(18) =9801a(19) =190969a(20) =14400a(21) =275625a(22) =20449a(23) =385641a(24) =28224a(25) =525625a(26) =38025a(27) =700569a(28) =50176a(29) =915849