2 ((-5*(3*Power(k,4) + 4*Power(k,2)*(3 - 2*Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,2) - 8*(-1 + Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,4)))/(24.*Power(k,3)) + (5*(3*Power(k,4) + 4*Power(k,2)*(3 - 2*Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,2) - 8*(-1 + Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,4)))/(12.*Power(k,3)) - (5*(3*Power(k,4) + 4*Power(k,2)*(3 - 2*Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,2) - 8*(-1 + Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,4)))/(12.*Power(k,3)) + (5*(3*Power(k,4) + 4*Power(k,2)*(3 - 2*Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,2) - 8*(-1 + Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,4)))/(24.*Power(k,3)) - (3*Power(k,4) + 4*Power(k,2)*(3 - 2*Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,2) - 8*(-1 + Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,4))/(24.*Power(k,3)) + (3*Power(k,4) + 8*Power(k0,3)*(k0 - Complex(0,1)*Sqrt(Power(k,2) - Power(k0,2))) + 4*Power(k,2)*k0*(-3*k0 + Complex(0,2)*Sqrt(Power(k,2) - Power(k0,2))))/(24.*Power(k,3)))/Power(k0,3)
3 SeriesData[k, Infinity, {(15*c^5)/k0^3, 0, (-35*(20*c^7 - (15*I)*c^6*k0 - 3*c^5*k0^2))/(2*k0^3), 0, (315*(331*c^9 - (450*I)*c^8*k0 - 240*c^7*k0^2 + (60*I)*c^6*k0^3 + 6*c^5*k0^4))/(16*k0^3), 0, (-165*(22430*c^11 - (42525*I)*c^10*k0 - 34755*c^9*k0^2 + (15750*I)*c^8*k0^3 + 4200*c^7*k0^4 - (630*I)*c^6*k0^5 - 42*c^5*k0^6))/(32*k0^3)}, 4, 11, 1]