Row sums of triangle K(m, n), inverse to triangle T(m,n) in A020921.

Terms

a(0) =1a(1) =0a(2) =-1a(3) =3a(4) =-8a(5) =21a(6) =-54a(7) =134a(8) =-318a(9) =720a(10) =-1560a(11) =3259a(12) =-6641a(13) =13391a(14) =-27107a(15) =55657a(16) =-116244a(17) =245823a(18) =-521738a(19) =1101566a(20) =-2299215a(21) =4730990a(22) =-9601095a(23) =19273729a(24) =-38446742a(25) =76598275a(26) =-153119606a(27) =308061214a(28) =-624460449a(29) =1274268038