Incorrect version of A091967.

Terms

a(0) =1a(1) =2a(2) =1a(3) =0a(4) =2a(5) =3a(6) =0a(7) =6a(8) =8a(9) =4a(10) =63a(11) =1a(12) =316a(13) =42a(14) =16a(15) =2048a(16) =7652a(17) =13781a(18) =8a(19) =24000a(20) =11977a(21) =458561a(23) =1054535a(24) =53a(25) =26a(26) =27a(27) =59a(28) =4806078a(29) =3a(30) =35792568