Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial h(n,x) with h(0,x)=1, h(1,x)=1-x and recursively h(n,x) = 1 + n -(1-x)*(1-h(n-1,x)) - n*h(n-2,x).
A136247
Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial h(n,x) with h(0,x)=1, h(1,x)=1-x and recursively h(n,x) = 1 + n -(1-x)*(1-h(n-1,x)) - n*h(n-2,x).
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =-1a(10) =1a(11) =6a(12) =-4a(13) =-3a(14) =1a(15) =1a(16) =-4a(17) =-20a(18) =6a(19) =4a(20) =-1a(21) =1a(22) =-40a(23) =8a(24) =44a(25) =-8a(26) =-5a(27) =1a(28) =1a(29) =-12
External references
- oeis: A136247