Denominators of Bernoulli numbers B_{2n}.

Terms

a(0) =1a(1) =6a(2) =30a(3) =42a(4) =30a(5) =66a(6) =2730a(7) =6a(8) =510a(9) =798a(10) =330a(11) =138a(12) =2730a(13) =6a(14) =870a(15) =14322a(16) =510a(17) =6a(18) =1919190a(19) =6a(20) =13530a(21) =1806a(22) =690a(23) =282a(24) =46410a(25) =66a(26) =1590a(27) =798a(28) =870a(29) =354