A116245 n times n+9 gives the concatenation of two numbers m and m-7.

8, 698, 775, 789, 866, 42336, 57656, 96882, 44121665, 55878327, 85298136, 36680703009575609347721358492, 63319296990424390652278641500, 69346342454876071597336150480, 81501115172242572470460459682

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			85298136 * 85298145 = 72757727//72757720, where // denotes
concatenation.
		

Crossrefs

Cf. A116114, A116240, A116244, A116258.