Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+1.
A116297
Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+1.
Terms
- a(0) =2a(1) =5a(2) =43a(3) =54a(4) =38161a(5) =61836a(6) =83616a(7) =346978a(8) =653019a(9) =950049a(10) =8647553a(11) =9534263a(12) =8167822281a(13) =9007920990a(14) =9209900790a(15) =9950000499
External references
- oeis: A116297