Denominator of Bernoulli(n, -1/6).

Terms

a(0) =1a(1) =3a(2) =36a(3) =54a(4) =6480a(5) =1944a(6) =326592a(7) =69984a(8) =8398080a(9) =2519424a(10) =665127936a(11) =90699264a(12) =990435962880a(13) =3265173504a(14) =78364164096a(15) =117546246144