Denominator of 1/16 - 1/n^2.

Terms

a(0) =1a(1) =400a(2) =144a(3) =784a(4) =64a(5) =1296a(6) =400a(7) =1936a(8) =18a(9) =2704a(10) =784a(11) =3600a(12) =256a(13) =4624a(14) =1296a(15) =5776a(16) =50a(17) =7056a(18) =1936a(19) =8464a(20) =576a(21) =10000a(22) =2704a(23) =11664a(24) =49a(25) =13456a(26) =3600a(27) =15376a(28) =1024a(29) =17424