Sequence whose Hankel transform is a (1,1) Somos-4 sequence.

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =12a(5) =22a(6) =37a(7) =56a(8) =73a(9) =75a(10) =44a(11) =-21a(12) =-39a(13) =297a(14) =1751a(15) =5749a(16) =14104a(17) =27136a(18) =38163a(19) =22135a(20) =-80421a(21) =-369611a(22) =-934754a(23) =-1637758a(24) =-1559395a(25) =2019629a(26) =14766699a(27) =44732254a(28) =94865112a(29) =138114302