Record values obtained in the iterative process related to the abundancy function sigma(n)/n described in comments.

A247141

Record values obtained in the iterative process related to the abundancy function sigma(n)/n described in comments.

Terms

    a(0) =1a(1) =15a(2) =448a(3) =1023a(4) =2160a(5) =4218a(6) =4256a(7) =22528a(8) =65535a(9) =73216a(10) =602547a(11) =1048575a(12) =1432640a(13) =4194303a(14) =8567136a(15) =19299763a(16) =25165821a(17) =34713728a(18) =46467543a(19) =78913536a(20) =89522176a(21) =115343360a(22) =155493536a(23) =158414464a(24) =268435455

External references