A116306 n times n+9 gives the concatenation of two numbers m and m+2.

3349727, 3922992, 6077000, 6650265, 4076746044440402197, 5923253955559597795, 7713109680804038561, 33652275100997044455421, 66347724899002955544571, 74261393963751156983420

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

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

Crossrefs

Cf. A116175, A116300, A116305, A116313.