Square array read by ascending antidiagonals: T(n,k) = [x^(3*k)] ( (1 + x)^(n+3)/(1 - x)^(n-3) )^k for n, k >= 0.
A364519
Square array read by ascending antidiagonals: T(n,k) = [x^(3*k)] ( (1 + x)^(n+3)/(1 - x)^(n-3) )^k for n, k >= 0.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =-4a(5) =-20a(6) =1a(7) =0a(8) =28a(9) =0a(10) =1a(11) =20a(12) =-84a(13) =-220a(14) =924a(15) =1a(16) =64a(17) =924a(18) =0a(19) =1820a(20) =0a(21) =1a(22) =140a(23) =12012a(24) =48620a(25) =16796a(26) =-15504a(27) =-48620a(28) =1a(29) =256
External references
- oeis: A364519