k Forward computation GCF based solution Exact solution 0 1 1 1 1 0.171429 0.171429 0.171429 2 0.286531 0.286531 0.286531 3 0.0932012 0.0932012 0.0932012 4 0.0896566 0.0896566 0.0896566 5 0.0393357 0.0393357 0.0393357 17 $9.85074×{10}^{-5}$ $9.85075×{10}^{-5}$ $9.85075×{10}^{-5}$ 18 $5.93420×{10}^{-5}$ $5.93424×{10}^{-5}$ $5.93424×{10}^{-5}$ 19 $3.55023×{10}^{-5}$ $3.55035×{10}^{-5}$ $3.55035×{10}^{-5}$ 20 $2.13423×{10}^{-5}$ $2.13458×{10}^{-5}$ $2.13458×{10}^{-5}$ 21 $1.27782×{10}^{-5}$ $1.27888×{10}^{-5}$ $1.27888×{10}^{-5}$ 22 $7.64963×{10}^{-6}$ $7.68128×{10}^{-6}$ $7.68128×{10}^{-6}$ 23 $4.51039×{10}^{-6}$ $4.60533×{10}^{-6}$ $4.60533×{10}^{-6}$ 24 $2.47987×{10}^{-6}$ $2.76467×{10}^{-6}$ $2.76467×{10}^{-6}$ 25 $8.03766×{10}^{-7}$ $1.65817×{10}^{-6}$ $1.65817×{10}^{-6}$ 26 $-1.56804×{10}^{-6}$ $9.95173×{10}^{-7}$ $9.95173×{10}^{-7}$ 27 $-7.09265×{10}^{-6}$ $5.96988×{10}^{-7}$ $5.96988×{10}^{-7}$ 28 $-2.27107×{10}^{-5}$ $3.58242×{10}^{-7}$ $3.58242×{10}^{-7}$ 29 $-6.89918×{10}^{-5}$ $2.14924×{10}^{-7}$ $2.14924×{10}^{-7}$ 30 −0.000207491 $1.28964×{10}^{-7}$ $1.28964×{10}^{-7}$ 40 −12.2598 $7.79771×{10}^{-10}$ $7.79771×{10}^{-10}$ 50 −723,927 $4.71497×{10}^{-12}$ $4.71497×{10}^{-12}$