Values at middle points of each row of A233270: a(n) = A233270(A233268(n)).

Terms

a(0) =0a(1) =-1a(2) =0a(3) =1a(4) =1a(5) =3a(6) =3a(7) =19a(8) =35a(9) =67a(10) =127a(11) =218a(12) =369a(13) =660a(14) =1267a(15) =2476a(16) =4863a(17) =9453a(18) =18078a(19) =34173a(20) =64374a(21) =121515a(22) =227965a(23) =426603a(24) =793638a(25) =1482307a(26) =2764957a(27) =5183333a(28) =9830514