a(n) = -(A(n) - A(n-1)) where A(n) = A057597(n+1), for n >= 0.

Terms

a(0) =0a(1) =-1a(2) =2a(3) =-1a(4) =-2a(5) =5a(6) =-4a(7) =-3a(8) =12a(9) =-13a(10) =-2a(11) =27a(12) =-38a(13) =9a(14) =56a(15) =-103a(16) =56a(17) =103a(18) =-262a(19) =215a(20) =150a(21) =-627a(22) =692a(23) =85a(24) =-1404a(25) =2011a(26) =-522a(27) =-2893a(28) =5426a(29) =-3055