Numbers such that the sequence of all possible sums of divisors of n is increasing but not strictly so, the sums being ordered by their characteristic functions, seen as binary numbers (see example).
A230492
Numbers such that the sequence of all possible sums of divisors of n is increasing but not strictly so, the sums being ordered by their characteristic functions, seen as binary numbers (see example).
Terms
- a(0) =6a(1) =28a(2) =117a(3) =475a(4) =496a(5) =775a(6) =2009a(7) =8128a(8) =13079a(9) =13189a(10) =14663a(11) =16211a(12) =23903a(13) =26675a(14) =30503a(15) =35425a(16) =37271a(17) =41123a(18) =43681a(19) =44591a(20) =46163a(21) =47519a(22) =55991a(23) =59831a(24) =63971a(25) =66263a(26) =66785a(27) =73511a(28) =76751a(29) =78319
External references
- oeis: A230492