Denominator of Bernoulli(n, 1/2).

Terms

a(0) =1a(1) =1a(2) =12a(3) =1a(4) =240a(5) =1a(6) =1344a(7) =1a(8) =3840a(9) =1a(10) =33792a(11) =1a(12) =5591040a(13) =1a(14) =49152a(15) =1a(16) =16711680a(17) =1a(18) =104595456a(19) =1a(20) =173015040a(21) =1a(22) =289406976a(23) =1a(24) =22900899840a(25) =1a(26) =201326592a(27) =1a(28) =116769423360a(29) =1