Primitive terms of A051487.

Terms

a(0) =6a(1) =150a(2) =726a(3) =750a(4) =2310a(5) =3174a(6) =3750a(7) =5046a(8) =5874a(9) =6090a(10) =6930a(11) =7986a(12) =10086a(13) =10374a(14) =11550a(15) =16854a(16) =18270a(17) =18750a(18) =20790a(19) =24378a(20) =31122a(21) =34650a(22) =41334a(23) =42630a(24) =47526a(25) =54810a(26) =57750a(27) =62370a(28) =63618a(29) =64614