a(n) = denominator(Bernoulli(n, x) - Bernoulli(n, 1/2)).

Terms

a(0) =1a(1) =2a(2) =4a(3) =2a(4) =16a(5) =6a(6) =64a(7) =6a(8) =768a(9) =10a(10) =1024a(11) =6a(12) =4096a(13) =210a(14) =245760a(15) =6a(16) =196608a(17) =30a(18) =1310720a(19) =210a(20) =22020096a(21) =330a(22) =62914560a(23) =30a(24) =251658240a(25) =546a(26) =1409286144a(27) =14a(28) =268435456a(29) =30