Square array T(n, k) = Product_{j=1..n} (1 - ChebyshevT(j, k+1)^2) with T(n, 0) = n!, read by antidiagonals.
A156647
Square array T(n, k) = Product_{j=1..n} (1 - ChebyshevT(j, k+1)^2) with T(n, 0) = n!, read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-3a(5) =2a(6) =1a(7) =-8a(8) =144a(9) =6a(10) =1a(11) =-15a(12) =2304a(13) =-97200a(14) =24a(15) =1a(16) =-24a(17) =14400a(18) =-22579200a(19) =914457600a(20) =120a(21) =1a(22) =-35a(23) =57600a(24) =-857304000a(27) =720a(28) =1a(29) =-48a(30) =176400a(31) =-13548902400
External references
- oeis: A156647