A116147 Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 9.

4962, 237412345332, 262912791034, 468307643502

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Comments

Also, numbers k such that k concatenated with k+6 gives the product of two numbers which differ by 7.

Examples

			4962//4960 = 7040 * 7049, where // denotes concatenation.
		

Crossrefs

Cf. A116140, A116146, A116153, A116278.

Cf. A116195, A116200, A116202, A116209, A116332.

Extensions

Edited by N. J. A. Sloane at the suggestion of Eric Desbiaux, Mar 23 2008