Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 5.
A116193
Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 5.
Terms
- a(0) =11a(1) =45a(2) =18281a(3) =32769a(4) =56891a(5) =180689a(6) =330539a(7) =959481a(8) =1850201a(9) =3247409a(10) =4940219a(11) =2425563239a(12) =2575561739a(13) =6003563495a(14) =7245212645a(15) =7770160145
External references
- oeis: A116193