Numerators of coefficients in expansion of x^2*(1-exp(-2*x))^(-2).

Terms

a(0) =1a(1) =1a(2) =5a(3) =1a(4) =1a(5) =-1a(6) =-1a(7) =1a(8) =1a(9) =-1a(10) =-1a(11) =1a(12) =691a(13) =-691a(14) =-1a(15) =2a(16) =3617a(17) =-3617a(18) =-43867a(19) =43867a(20) =174611a(21) =-174611a(22) =-77683a(23) =155366a(24) =236364091a(25) =-236364091a(26) =-657931a(27) =1315862a(28) =3392780147a(29) =-6785560294