Expansion of g.f.: f'(t)/f(t), where f(t) = Sum_{p prime} t^p.

Terms

a(0) =2a(1) =1a(2) =-1a(3) =4a(4) =-5a(5) =11a(6) =-16a(7) =22a(8) =-37a(9) =67a(10) =-101a(11) =166a(12) =-260a(13) =404a(14) =-652a(15) =1049a(16) =-1653a(17) =2636a(18) =-4183a(19) =6632a(20) =-10565a(21) =16804a(22) =-26676a(23) =42390a(24) =-67372a(25) =107061a(26) =-170184a(27) =270472a(28) =-429784a(29) =683067