G.f.: Product_{i>0} Sum_{j>=0} (-1)^j*j!*x^(j*i).

A293236

G.f.: Product_{i>0} Sum_{j>=0} (-1)^j*j!*x^(j*i).

Terms

    a(0) =1a(1) =-1a(2) =1a(3) =-6a(4) =24a(5) =-117a(6) =700a(7) =-4947a(8) =39760a(9) =-358682a(10) =3594084a(11) =-39598866a(12) =475774299a(13) =-6191078998a(14) =86742689434

External references