Numbers k such that sigma(k) = Sum_{j|k, j<k} sigma(j).
A066218
Numbers k such that sigma(k) = Sum_{j|k, j<k} sigma(j).
Terms
- a(0) =198a(1) =608a(2) =11322a(3) =20826a(4) =56608a(5) =3055150a(6) =565344850a(7) =579667086a(8) =907521650a(9) =8582999958a(10) =13876688358a(11) =19244570848a(12) =195485816050a(13) =255701999358
External references
- oeis: A066218