A116229 Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-9.

8, 98, 998, 9998, 99998, 999998, 9999998, 99999998, 999999998, 9999999998, 36363636361, 45454545452, 54545454543, 63636363634, 72727272725, 81818181816, 90909090907, 99999999998, 999999999998, 9999999999998

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			99999998 * 100000004 = 100000001//99999992, where // denotes concatenation.
		

Crossrefs

Cf. A099150, A116098, A116228, A116230, A116237.