Squarefree kernel of A255334: a(n) = A007947(A255334(n)).

Terms

a(0) =42a(1) =210a(2) =462a(3) =546a(4) =714a(5) =798a(6) =966a(7) =210a(8) =1218a(9) =78a(10) =1302a(11) =1554a(12) =1722a(13) =1806a(14) =1974a(15) =2226a(16) =2310a(17) =2478a(18) =2562a(19) =2730a(20) =2814a(21) =2982a(22) =3066a(23) =3318a(24) =3486a(25) =3570a(26) =3738a(27) =3990a(28) =4074a(29) =4242