Numbers k such that the concatenation of k with k-9 gives a square.
A115436
Numbers k such that the concatenation of k with k-9 gives a square.
Terms
- a(0) =50a(1) =5234a(2) =9410a(3) =638370a(4) =994010a(5) =12477933a(6) =41829698a(7) =99940010a(8) =1087279650a(9) =4492494893a(10) =6226356365a(11) =7765453730a(12) =9999400010a(13) =806057802450a(14) =842377434050a(15) =960398039610a(16) =999994000010
External references
- oeis: A115436