<prompt> Msururu wa a_n unatoshelezaa_1 a_2 a_3 vitone a_n n2 a_nkwa zote n ge 2. Ikiwa a_63 1, pata a_1.  <response>: Kutoka a_1 a_2 a_3 vitone a_n n2 a_n,n2 - 1 a_n a_1 a_2 vitone a_n - 2 a_n - 1.Vivyo hivyo,n - 12 - 1 a_n - 1 a_1 a_2 vitone a_n - 2.Tukiondoa milinganyo hii, tunapatan2 - 1 a_n - n - 12 - 1 a_n - 1 a_n - 1,hivyon2 - 1 a_n n - 12 a_n - 1.Kisha n - 1n 1 a_n n - 12 a_ n - 1, hivyoa_n fracn - 1n 1 cdot a_n - 1kwa n zote ge 2.Kwa hiyo,anzaaligna_n fracn - 1n 1 cdoti a_n - 1 fracn - 1n 1 cdot fracn - 2n cdot a_n - 2 fracn - 1n 1 cdot fracn - 2n cdot fracn - 3n - 1 cdot a_n - 3 dotsb fracn - 1n 1 cdot fracn - 2n cdot fracn - 3n - 1 dotsb frac24 cdot frac13 cdot a_1 frac2a_1nn 1.endalignTunaambiwa kwamba a_63 1, hivyofrac2a_163 cdot 64 1.Hivyo, a_1 2016. 