Integers x such that there exists y, x>y>=1, satisfying (y+1)/(x+1) = (x||(y+1))/(y||(x+1)) where z||t is the concatenation of z and t.
A342387
Integers x such that there exists y, x>y>=1, satisfying (y+1)/(x+1) = (x||(y+1))/(y||(x+1)) where z||t is the concatenation of z and t.
Terms
- a(0) =20a(1) =175a(2) =1500a(3) =29600a(4) =253075a(5) =1124039a(6) =2163720a(7) =1620864179a(8) =3120083460a(9) =13857908224a(10) =118481007099
External references
- oeis: A342387