Numbers k such that k = Product (p_j^e_j) = Product (p_j*(e_j + 1)).

Terms

a(0) =1a(1) =8a(2) =9a(3) =72a(4) =13440a(5) =21120a(6) =24960a(7) =29568a(8) =32640a(9) =34944a(10) =36480a(11) =44160a(12) =45696a(13) =49280a(14) =51072a(15) =54912a(16) =55680a(17) =58240a(18) =59520a(19) =61824a(20) =71040a(21) =71808a(22) =76160a(23) =77952a(24) =78720a(25) =80256a(26) =82560a(27) =83328a(28) =84864a(29) =85120