Numbers such that the sum of divisors is twice the sum of the exponential divisors.

Terms

a(0) =6a(1) =24a(2) =54a(3) =216a(4) =1638a(5) =6552a(6) =14256a(7) =55860a(8) =80262a(9) =276822a(10) =321048a(11) =502740a(12) =1107288a(13) =1396500a(14) =1724976a(15) =12568500a(16) =13564278a(17) =20165460a(18) =54257112a(19) =168836850a(20) =181489140a(21) =504136500a(22) =675347400a(23) =4537228500a(24) =28533427650a(25) =60950102850a(26) =114133710600a(27) =162252212850a(28) =243800411400a(29) =649008851400