Numbers n such that 2n/sigma(n) - 1 = 1/x for some integer x.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =8a(5) =10a(6) =14a(7) =15a(8) =16a(9) =32a(10) =44a(11) =64a(12) =110a(13) =128a(14) =135a(15) =136a(16) =152a(17) =182a(18) =184a(19) =190a(20) =248a(21) =256a(22) =315a(23) =512a(24) =585a(25) =752a(26) =819a(27) =884a(28) =1012a(29) =1024