A116189 Numbers k such that k concatenated with k+4 gives the product of two numbers which differ by 8.
4, 80, 10736, 45205, 58256, 481580, 810181, 5321861, 8223821, 1342750076, 4014039205, 6425372269, 7089305869, 9801001981, 1057798964204, 4553034666541, 5261853984181, 8977355147344, 9962308611856
Offset: 1