Numerator of Bernoulli(n, -2/3).

Terms

a(0) =1a(1) =-7a(2) =23a(3) =-35a(4) =973a(5) =-245a(6) =7943a(7) =-1295a(8) =31813a(9) =-7721a(10) =288715a(11) =-13475a(12) =128296423a(13) =-882557a(14) =-4891999a(15) =33870025a(16) =26217383381a(17) =-2149340753a(19) =167302324405