Denominator of 1/36 - 1/n^2.

Terms

a(0) =36a(1) =9a(2) =12a(3) =144a(4) =900a(5) =1a(6) =1764a(7) =576a(8) =324a(9) =225a(10) =4356a(11) =48a(12) =6084a(13) =441a(14) =300a(15) =2304a(16) =10404a(17) =81a(18) =12996a(19) =3600a(20) =196a(21) =1089a(22) =19044a(23) =192a(24) =22500a(25) =1521a(26) =2916a(27) =7056a(28) =30276a(29) =75