f-triperfect numbers, where f(n) = sigma(n) and f-triperfect numbers are defined similarly to f-perfect numbers in A066218.
A066731
f-triperfect numbers, where f(n) = sigma(n) and f-triperfect numbers are defined similarly to f-perfect numbers in A066218.
Terms
- a(0) =4680a(1) =60192a(2) =179424a(3) =1737000a(4) =2578968a(5) =3441888a(6) =5604192a(7) =6008184a(8) =6331104a(9) =302459850a(10) =320457888a(11) =477229032a(12) =589459104a(13) =731925000a(14) =766073448a(15) =928765600
External references
- oeis: A066731