a(n) = denominator(Bernoulli(n, x)) / denominator(Bernoulli'(n, x)).

Terms

a(0) =1a(1) =2a(2) =6a(3) =1a(4) =30a(5) =1a(6) =42a(7) =1a(8) =10a(9) =1a(10) =66a(11) =1a(12) =2730a(13) =1a(14) =2a(15) =3a(16) =170a(17) =1a(18) =798a(19) =1a(20) =110a(21) =3a(22) =46a(23) =1a(24) =546a(25) =1a(26) =2a(27) =1a(28) =870a(29) =1