G.f. satisfies: A(x) = A(x^2) + sqrt( A(x^2) ), where A(x) = Sum_{n>=1} a(n) * x^n / 2^A274716(n).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =7a(7) =1a(8) =-21a(9) =1a(10) =71a(11) =1a(12) =5a(13) =7a(14) =1095a(15) =1a(16) =-15885a(17) =-21a(18) =18443a(19) =1a(20) =-55841a(21) =71a(22) =324945a(23) =1a(24) =-2649857a(25) =5a(26) =6109987a(27) =7a(28) =-18206579a(29) =1095