A116258 Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-5.

8444, 8809, 69125298546226023970, 69855225553525294043, 74604750601020544518, 75334677608319814591, 92496418993920707745, 93226346001219977818, 97975871048715228293, 98705798056014498366

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			8809 * 8818 = 7767//7762, where // denotes concatenation.
		

Crossrefs

Cf. A116180, A116245, A116257, A116264.