Numbers x,y,z such that UnitarySigma(x) = UnitarySigma(y) = UnitarySigma(z) = 3*(x*y*z)^(1/2)/(- x^(1/2) + 8*y^(1/2) - 5*z^(1/2)), z<=y<=x; sequence gives z.
A144674
Numbers x,y,z such that UnitarySigma(x) = UnitarySigma(y) = UnitarySigma(z) = 3*(x*y*z)^(1/2)/(- x^(1/2) + 8*y^(1/2) - 5*z^(1/2)), z<=y<=x; sequence gives z.
Terms
- a(0) =2a(1) =20a(2) =24a(3) =360a(4) =816a(5) =1056a(6) =12240a(7) =15840a(8) =29120a(9) =181632a(10) =287300a(11) =2724480a(12) =93358848a(13) =1400382720
External references
- oeis: A144674