Integers of the form A164577(k)/3.

Terms

a(0) =4a(1) =15a(2) =54a(3) =75a(4) =132a(5) =169a(6) =320a(7) =459a(8) =735a(9) =847a(10) =1104a(11) =1250a(12) =1764a(13) =2175a(14) =2904a(15) =3179a(16) =3780a(17) =4107a(18) =5200a(19) =6027a(20) =7425a(21) =7935a(22) =9024a(23) =9604a(24) =11492a(25) =12879a(26) =15162a(27) =15979a(28) =17700a(29) =18605