Squarefree kernels of 3-smooth numbers.

Terms

a(0) =1a(1) =2a(2) =3a(3) =2a(4) =6a(5) =2a(6) =3a(7) =6a(8) =2a(9) =6a(10) =6a(11) =3a(12) =2a(13) =6a(14) =6a(15) =6a(16) =2a(17) =6a(18) =3a(19) =6a(20) =6a(21) =2a(22) =6a(23) =6a(24) =6a(25) =6a(26) =3a(27) =2a(28) =6a(29) =6