Coefficient triangle for certain polynomials N(2; n,x) (rising powers of x).

Terms

a(0) =1a(1) =2a(2) =-1a(3) =5a(4) =-6a(5) =2a(6) =14a(7) =-28a(8) =20a(9) =-5a(10) =42a(11) =-120a(12) =135a(13) =-70a(14) =14a(15) =132a(16) =-495a(17) =770a(18) =-616a(19) =252a(20) =-42a(21) =429a(22) =-2002a(23) =4004a(24) =-4368a(25) =2730a(26) =-924a(27) =132a(28) =1430a(29) =-8008