Largest number whose sum of divisors is 6^n.

Terms

a(0) =1a(1) =5a(2) =22a(3) =187a(4) =1219a(5) =7597a(6) =46117a(7) =278857a(8) =1676377a(9) =10067797a(10) =60450517a(11) =362758177a(12) =2176626817a(13) =13060193977a(14) =78363525817a(15) =470183516857