Numbers of the form p^7*q^3 where p and q are distinct primes.

Terms

a(0) =3456a(1) =16000a(2) =17496a(3) =43904a(4) =170368a(5) =273375a(6) =281216a(7) =625000a(8) =628864a(9) =750141a(10) =877952a(11) =1557376a(12) =2109375a(13) =2910897a(14) =3121792a(15) =3813248a(16) =4804839a(17) =6483584a(18) =6588344a(19) =8821888a(20) =10176896a(21) =10744731a(22) =13289344a(23) =15000633a(24) =19056256