Records in A019294, number of iterations of the sigma function to reach a multiple of the starting value.

A019277

Records in A019294, number of iterations of the sigma function to reach a multiple of the starting value.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =5a(4) =7a(5) =15a(6) =16a(7) =17a(8) =78a(9) =97a(10) =101a(11) =120a(12) =174a(13) =214a(14) =239a(15) =261a(16) =263a(17) =296a(18) =380a(19) =557a(20) =1287a(21) =1524a(22) =1722a(23) =1911a(24) =2023a(25) =2373

External references