Triangle read by rows: T(0,0) = 1; T(n,k) = -2 T(n-1,k) + 3 * T(n-3,k-1) for k = 0..floor(n/3); T(n,k)=0 for n or k < 0.

A317503

Triangle read by rows: T(0,0) = 1; T(n,k) = -2 T(n-1,k) + 3 * T(n-3,k-1) for k = 0..floor(n/3); T(n,k)=0 for n or k < 0.

Terms

    a(0) =1a(1) =-2a(2) =4a(3) =-8a(4) =3a(5) =16a(6) =-12a(7) =-32a(8) =36a(9) =64a(10) =-96a(11) =9a(12) =-128a(13) =240a(14) =-54a(15) =256a(16) =-576a(17) =216a(18) =-512a(19) =1344a(20) =-720a(21) =27a(22) =1024a(23) =-3072a(24) =2160a(25) =-216a(26) =-2048a(27) =6912a(28) =-6048a(29) =1080

External references