Matrix inverse of triangle A121334, where A121334(n,k) = C( n*(n+1)/2 + n-k, n-k) for n>=k>=0.

Terms

a(0) =1a(1) =-2a(2) =1a(3) =-2a(4) =-4a(5) =1a(6) =-14a(7) =0a(8) =-7a(9) =1a(10) =-143a(11) =-22a(12) =11a(13) =-11a(14) =1a(15) =-1928a(16) =-260a(17) =-40a(18) =40a(19) =-16a(20) =1a(21) =-32219a(22) =-3894a(23) =-385a(24) =-121a(25) =99a(26) =-22a(27) =1a(28) =-640784a(29) =-70644