Number of solutions to c(1)*prime(3)+...+c(n)*prime(n+2) = 2, where c(i) = +-1 for i>1, c(1) = 1.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =0a(7) =1a(8) =0a(9) =5a(10) =0a(11) =18a(12) =0a(13) =59a(14) =0a(15) =180a(16) =0a(17) =576a(18) =0a(19) =1993a(20) =0a(21) =6864a(22) =0a(23) =23804a(24) =0a(25) =83796a(26) =0a(27) =300913a(28) =0a(29) =1066508