Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 9.
A116114
Numbers k such that k concatenated with k-7 gives the product of two numbers which differ by 9.
Terms
- a(0) =13a(1) =493a(2) =607a(3) =629a(4) =757a(5) =17927a(6) =33247a(7) =93869a(8) =19467217a(9) =31223879a(10) =72757727
External references
- oeis: A116114