Numbers k such that k*(k+2) gives the concatenation of two numbers m and m-2.
A116273
Numbers k such that k*(k+2) gives the concatenation of two numbers m and m-2.
Terms
- a(0) =90a(1) =9078a(2) =9900a(3) =733673a(4) =999000a(5) =88225294a(6) =99990000a(7) =8900869207a(8) =9296908811a(9) =9604060396a(10) =9999900000a(11) =326666333266a(12) =673333666733a(13) =700730927007a(14) =972603739726a(15) =999999000000
External references
- oeis: A116273