A116347 n times n+9 gives the concatenation of two numbers m and m+8.

345, 647, 829, 878, 933, 33180, 42271, 57721, 66812, 316429537030539, 319485532390187, 328611858418903, 332707864512186, 339600869407914, 347417506407134, 355879196889561, 370588838784509, 383811170906508

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			66812 * 66821 = 44644//44652, where // denotes concatenation.
		

Crossrefs

Cf. A116216, A116342, A116346, A116355.