Coefficient of x in the reduction (by x^2->x+1) of polynomial p(n,x) identified in Comments.

A192351

Coefficient of x in the reduction (by x^2->x+1) of polynomial p(n,x) identified in Comments.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =20a(4) =56a(5) =320a(6) =1120a(7) =5312a(8) =20608a(9) =90880a(10) =368640a(11) =1577984a(12) =6522880a(13) =27578368a(14) =114909184a(15) =483328000a(16) =2020573184a(17) =8480555008a(18) =35502817280a(19) =148874461184a(20) =623609118720

External references