Numbers k such that k concatenated with itself gives the product of two numbers which differ by 9.
A116162
Numbers k such that k concatenated with itself gives the product of two numbers which differ by 9.
Terms
- a(0) =2a(1) =92a(2) =180a(3) =332a(4) =486a(5) =536a(6) =992a(7) =9720a(8) =9992a(9) =13220a(10) =40502a(11) =99992a(12) =941486a(13) =999992a(14) =2066120a(15) =2975202a(16) =9999992a(17) =77854680a(18) =99999992a(19) =123250136a(20) =162423540a(21) =243964010a(22) =256109750a(23) =356387462a(24) =421110162a(25) =542936282a(26) =547361900
External references
- oeis: A116162