Binomial centered tridigonal matrices as a triangular sequence: t(n,m.d)=If[n + m - 1 == d, binomial[d - 1, n - 1], If[n + m == d, -1, If[n + m - 2 == d, -1, 0]]].

A124030

Binomial centered tridigonal matrices as a triangular sequence: t(n,m.d)=If[n + m - 1 == d, binomial[d - 1, n - 1], If[n + m == d, -1, If[n + m - 2 == d, -1, 0]]].

Terms

    a(0) =1a(1) =1a(2) =-1a(3) =0a(4) =-2a(5) =1a(6) =0a(7) =-3a(8) =4a(9) =-1a(10) =3a(11) =-14a(12) =19a(13) =-8a(14) =1a(15) =48a(16) =-173a(17) =204a(18) =-89a(19) =16a(20) =-1a(21) =1505a(22) =-4866a(23) =5173a(24) =-2082a(25) =381a(26) =-32a(27) =1a(28) =108780a(29) =-325990

External references