A triangular sequence from coefficients of a mixed type of three deep polynomial recursion: Q(x, n) = 6*x*Q(x, n - 2)*Q(x, n - 3) - 2*Q(x, n - 3).

A137349

A triangular sequence from coefficients of a mixed type of three deep polynomial recursion: Q(x, n) = 6*x*Q(x, n - 2)*Q(x, n - 3) - 2*Q(x, n - 3).

Terms

    a(0) =1a(1) =-2a(2) =2a(3) =0a(4) =-2a(5) =-12a(6) =12a(7) =4a(8) =-4a(9) =0a(10) =4a(11) =-24a(12) =-264a(13) =576a(14) =-288a(15) =-8a(16) =8a(17) =0a(18) =-8a(19) =-144a(20) =1872a(21) =10368a(22) =-39744a(23) =41472a(24) =-13824a(25) =16a(26) =-16

External references