A116203 Numbers k such that k concatenated with k+6 gives the product of two numbers which differ by 9.

24, 26, 1014, 1196, 4280, 4646, 10512559797957763880, 22117246687805424846, 24058546574769555806, 25959521962351403984, 28059292876752476030, 45666404019969616806, 51120259070514684854, 56575813788698035286

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			4646//4652 = 6812 * 6821, where // denotes concatenation.
		

Crossrefs

Cf. A116197, A116202, A116211, A116334.