Numbers k where 3k sets a record for the number of divisors of multiples of 3.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =12a(5) =16a(6) =20a(7) =40a(8) =60a(9) =80a(10) =120a(11) =240a(12) =280a(13) =420a(14) =560a(15) =840a(16) =1680a(17) =2520a(18) =3360a(19) =5040a(20) =6720a(21) =8400a(22) =9240a(23) =15120a(24) =16800a(25) =18480a(26) =27720a(27) =36960a(28) =55440a(29) =73920