Triangular numbers composed of digits {0,1,6}.

Terms

a(0) =1a(1) =6a(2) =10a(3) =66a(4) =666a(5) =10011a(6) =16110a(7) =66066a(8) =600060a(9) =6601161a(10) =10006101a(11) =11066160a(12) =660061611a(13) =1001661661a(14) =1061660160a(15) =1100016060a(16) =1660061010