A triangle of polynomial coefficients: p(x,n)=-(ChebyshevT[n, x] - ((x + 1)^n + (1 - x)^n)); sp(x,n) = p(x, n) + x^n*p(1/x, n).

A155993

A triangle of polynomial coefficients: p(x,n)=-(ChebyshevT[n, x] - ((x + 1)^n + (1 - x)^n)); sp(x,n) = p(x, n) + x^n*p(1/x, n).

Terms

    a(0) =2a(1) =1a(2) =1a(3) =3a(4) =0a(5) =3a(6) =-2a(7) =9a(8) =9a(9) =-2a(10) =-5a(11) =0a(12) =40a(13) =0a(14) =-5a(15) =-14a(16) =5a(17) =40a(18) =40a(19) =5a(20) =-14a(21) =-27a(22) =0a(23) =90a(24) =0a(25) =90a(26) =0a(27) =-27a(28) =-62a(29) =21

External references