Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1+x-x^2)^(n+1)*Sum_{j >= 0} (j+1)^n*(-x + x^2)^j.
A156890
Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1+x-x^2)^(n+1)*Sum_{j >= 0} (j+1)^n*(-x + x^2)^j.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =-1a(4) =1a(5) =1a(6) =-4a(7) =5a(8) =-2a(9) =1a(10) =1a(11) =-11a(12) =22a(13) =-23a(14) =14a(15) =-3a(16) =1a(17) =1a(18) =-26a(19) =92a(20) =-158a(21) =145a(22) =-82a(23) =32a(24) =-4a(25) =1a(26) =1a(27) =-57a(28) =359a(29) =-906
External references
- oeis: A156890