Numbers k such that k and k+1 are both primitive abundant numbers (A071395).

Terms

a(0) =82004a(1) =158235a(2) =516704a(3) =2921535a(4) =5801984a(5) =10846016a(6) =12374144a(7) =12603824a(8) =18738224a(9) =24252074a(10) =32409530a(11) =33696975a(12) =35356544a(13) =36149295a(14) =41078114a(15) =42541190a(16) =43485584a(17) =65090864a(18) =88304475a(19) =90725775a(20) =181480695a(21) =183872535a(22) =213261795a(23) =233762528a(24) =242301344a(25) =254502495a(26) =254630144