Triangle read by rows: coefficients from the expansion of p(x,t) = tan(x*arctan(t)) which is in the Chebyshevlike form: T(t,x) = cos(x*arccos(t)).

A137668

Triangle read by rows: coefficients from the expansion of p(x,t) = tan(x*arctan(t)) which is in the Chebyshevlike form: T(t,x) = cos(x*arccos(t)).

Terms

    a(0) =0a(1) =1a(2) =0a(3) =-2a(4) =0a(5) =2a(6) =0a(7) =24a(8) =0a(9) =-40a(10) =0a(11) =16a(12) =0a(13) =-720a(14) =0a(15) =1568a(16) =0a(17) =-1120a(18) =0a(19) =272a(20) =0a(21) =40320a(22) =0a(23) =-104704a(24) =0a(25) =102144a(26) =0a(27) =-45696a(28) =0a(29) =7936

External references