Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-9.
A116229
Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-9.
Terms
- a(0) =8a(1) =98a(2) =998a(3) =9998a(4) =99998a(5) =999998a(6) =9999998a(7) =99999998a(8) =999999998a(9) =9999999998a(10) =36363636361a(11) =45454545452a(12) =54545454543a(13) =63636363634a(14) =72727272725a(15) =81818181816a(16) =90909090907a(17) =99999999998a(18) =999999999998
External references
- oeis: A116229