Numerator of Bernoulli(n, 1/2).

Terms

a(0) =1a(1) =0a(2) =-1a(3) =0a(4) =7a(5) =0a(6) =-31a(7) =0a(8) =127a(9) =0a(10) =-2555a(11) =0a(12) =1414477a(13) =0a(14) =-57337a(15) =0a(16) =118518239a(17) =0a(18) =-5749691557a(19) =0a(20) =91546277357a(21) =0a(23) =0a(25) =0a(27) =0a(29) =0a(31) =0a(33) =0