<prompt> Mfuatano unafafanuliwa kwa a_0 frac12 na a_n 1 a_n - 1 - 12. Kokotoaa_0 a_1 a_2 dotsm.  <response>: Acha b_n a_n - 1. Kisha b_ n b_n - 12, naanzaaligna_0 a_1 a_2 dotsm 1 b_01 b_021 b_04 dotsm frac1 - b_021 - b_0 cdot frac1 - b_041 - b_02 cdot frac1 - b_081 - b_0 4 dotsm frac11 - b_0 frac11 - -12 frac23.mwishopanga 