Quotient of 'base-13' division described in A032557.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =2a(10) =2a(11) =2a(12) =6a(13) =6a(14) =6a(15) =8a(16) =8a(17) =8a(18) =8a(19) =10a(20) =10a(21) =10a(22) =13a(23) =13a(24) =13a(25) =13a(26) =16a(27) =16