A116242 Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-7.

8871, 9008, 83352839, 99000098, 329767122285, 670232877710, 738226276370, 933006600338, 999000000998, 3779410975143112, 3872816717528064, 4250291784692547, 4278630943941864, 4372036686326816, 4749511753491299

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			99000098 * 99000104 = 98010199//98010192, where // denotes concatenation.
		

Crossrefs

Cf. A115426, A116237, A116241, A116243, A116256.