Numbers of the form A000217(n)*A007494(n) that are divisible by 3.

Terms

a(0) =0a(1) =9a(2) =30a(3) =60a(4) =120a(5) =189a(6) =432a(7) =630a(8) =825a(9) =1122a(10) =1404a(11) =2205a(12) =2760a(13) =3264a(14) =3978a(15) =4617a(16) =6300a(17) =7392a(18) =8349a(19) =9660a(20) =10800a(21) =13689a(22) =15498a(23) =17052a(24) =19140a(25) =20925a(26) =25344a(27) =28050a(28) =30345a(29) =33390