A116175 Numbers k such that k concatenated with k+2 gives the product of two numbers which differ by 9.

1122070, 1538990, 3692998, 4422608, 1661985831086046580, 3508493742205242178, 5949206094811297768, 11324756194731856386028, 44020205992737767475178, 55147546334394567747178

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			4422608//4422610 = 6650265 * 6650274, where // denotes
concatenation.
		

Crossrefs

Cf. A116169, A116174, A116182, A116306.