A nonsense sequence.

Terms

a(0) =2a(1) =9a(2) =9a(3) =2a(4) =212a(5) =2a(6) =2a(7) =1618a(8) =1618a(9) =2a(10) =2a(11) =2100a(12) =54116a(13) =2100a(14) =2a(15) =2a(16) =2786a(17) =609572a(18) =609572a(19) =2786a(20) =2a(21) =2a(22) =3712a(23) =1582558a(24) =26220736a(25) =1582558a(26) =3712a(27) =2a(28) =2a(29) =4914