A116257 n times n+8 gives the concatenation of two numbers m and m-5.

7, 8217106, 8030443878983905980, 43467818511541680701794365325328847002050, 56532181488458319298205634674671152997943

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			8217106 * 8217114 = 6752089//6752084, where // denotes
concatenation.
		

Crossrefs

Cf. A116126, A116244, A116256, A116258, A116270.