Triangle read by rows: coefficients of descending powers of the polynomial V(n,x) = cos((2n+1)(arccos(x)/2))/cos(arccos(x)/2), n >= 0.
A228565
Triangle read by rows: coefficients of descending powers of the polynomial V(n,x) = cos((2n+1)(arccos(x)/2))/cos(arccos(x)/2), n >= 0.
Terms
- a(0) =1a(1) =2a(2) =-1a(3) =4a(4) =-2a(5) =-1a(6) =8a(7) =-4a(8) =-4a(9) =1a(10) =16a(11) =-8a(12) =-12a(13) =4a(14) =1a(15) =32a(16) =-16a(17) =-32a(18) =12a(19) =6a(20) =-1a(21) =64a(22) =-32a(23) =-80a(24) =32a(25) =24a(26) =-6a(27) =-1a(28) =128a(29) =-64
External references
- oeis: A228565