Denominator of (1/3)*n*(n + 2)/((1 + 2*n)*(3 + 2*n)).

Terms

a(0) =1a(1) =15a(2) =105a(3) =63a(4) =99a(5) =429a(6) =195a(7) =85a(8) =969a(9) =133a(10) =483a(11) =1725a(12) =675a(13) =783a(14) =2697a(15) =1023a(16) =385a(17) =3885a(18) =481a(19) =1599a(20) =5289a(21) =1935a(22) =2115a(23) =6909a(24) =2499a(25) =901a(26) =8745a(27) =1045a(28) =3363a(29) =10797