Numbers n such that sigma(4n+1)=6n.

Terms

a(0) =1a(1) =8a(2) =65a(3) =96a(4) =224a(5) =560a(6) =6734a(7) =11648a(8) =3588320a(9) =67969536a(10) =290575208a(11) =1629860960a(12) =4758938912a(13) =10769110400