Denominator of 1/25 - 1/n^2.

Terms

a(0) =1a(1) =900a(2) =1225a(3) =1600a(4) =2025a(5) =100a(6) =3025a(7) =3600a(8) =4225a(9) =4900a(10) =225a(11) =6400a(12) =7225a(13) =8100a(14) =9025a(15) =80a(16) =11025a(17) =12100a(18) =13225a(19) =14400a(20) =625a(21) =16900a(22) =18225a(23) =19600a(24) =21025a(25) =180a(26) =24025a(27) =25600a(28) =27225a(29) =28900