Distinct values of denominators of Bernoulli numbers B(2n) in order of their appearance as n grows.

Terms

a(0) =6a(1) =30a(2) =42a(3) =66a(4) =2730a(5) =510a(6) =798a(7) =330a(8) =138a(9) =870a(10) =14322a(11) =1919190a(12) =13530a(13) =1806a(14) =690a(15) =282a(16) =46410a(17) =1590a(18) =354a(19) =56786730a(20) =64722a(21) =4686a(22) =140100870a(23) =3318a(24) =230010a(25) =498a(26) =3404310a(27) =61410a(28) =272118a(29) =1410