Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial p(n,x) with p(0,x) = 1, p(1,x) = 2 - x, p(2,x) = 1 - 4*x + x^2 and p(n,x) = (2-x)*p(n-1,x) - p(n-2,x) if n>2.
A136674
Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial p(n,x) with p(0,x) = 1, p(1,x) = 2 - x, p(2,x) = 1 - 4*x + x^2 and p(n,x) = (2-x)*p(n-1,x) - p(n-2,x) if n>2.
Terms
- a(0) =1a(1) =2a(2) =-1a(3) =1a(4) =-4a(5) =1a(6) =0a(7) =-8a(8) =6a(9) =-1a(10) =-1a(11) =-12a(12) =19a(13) =-8a(14) =1a(15) =-2a(16) =-15a(17) =44a(18) =-34a(19) =10a(20) =-1a(21) =-3a(22) =-16a(23) =84a(24) =-104a(25) =53a(26) =-12a(27) =1a(28) =-4a(29) =-14
External references
- oeis: A136674