Denominator of Bernoulli(n, 1/4).

Terms

a(0) =1a(1) =4a(2) =48a(3) =64a(4) =3840a(5) =1024a(6) =86016a(7) =16384a(8) =983040a(9) =262144a(10) =34603008a(11) =4194304a(12) =22900899840a(13) =67108864a(14) =805306368a(15) =1073741824a(17) =17179869184a(19) =274877906944