A116259 n times n+3 gives the concatenation of two numbers m and m-4.

7282817, 8171727, 4550754022124826466, 5449245977875173532, 8176518705147900805, 8951999555715882882349355522888, 9861090464806791973258446431979

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			8171727 * 8171730 = 6677714//6677710, where // denotes
concatenation.
		

Crossrefs

Cf. A116128, A116253, A116260, A116274.