Trajectory of 23 under map that sends x to 3x - sigma(x), where sigma(x) is the sum of the divisors of x.
A058545
Trajectory of 23 under map that sends x to 3x - sigma(x), where sigma(x) is the sum of the divisors of x.
Terms
- a(0) =23a(1) =45a(2) =57a(3) =91a(4) =161a(5) =291a(6) =481a(7) =911a(8) =1821a(9) =3031a(10) =5621a(11) =9759a(12) =16261a(13) =29199a(14) =48661a(15) =97321a(16) =180731a(17) =361461a(18) =595359a(19) =914661a(20) =1302543a(21) =1810989a(22) =2732295a(23) =3594645a(24) =4393215a(25) =5513805a(26) =5482215a(27) =6700245a(28) =8913663a(29) =12588669
External references
- oeis: A058545