Inverse binomial transform of A000957.

Terms

a(0) =0a(1) =1a(2) =-2a(3) =4a(4) =-6a(5) =11a(6) =-14a(7) =29a(8) =-26a(9) =85a(10) =-12a(11) =320a(12) =312a(13) =1639a(14) =3190a(15) =10484a(16) =25822a(17) =75005a(18) =200488a(19) =564662a(20) =1555804a(21) =4363139a(22) =12184456a(23) =34267931a(24) =96435100a(25) =272390561a(26) =770734846a(27) =2186278294a(28) =6213111234