Expansion of e.g.f. -log( 1 - x^2 * exp(x) / 2 ).

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =9a(5) =40a(6) =225a(7) =1491a(8) =11578a(9) =102852a(10) =1026945a(11) =11394955a(12) =139091106a(13) =1852061718a(14) =26716291693a(15) =415033647315