A116181 Numbers k such that k concatenated with k+3 gives the product of two numbers which differ by 8.

57, 1062, 4545, 9517, 65040816823705919148274557212824575357, 73854453524198329292125744115286819630, 78444109191135472482770868099397646205

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			9517//9520 = 9752 * 9760, where // denotes concatenation.
		

Crossrefs

Cf. A116174, A116180, A116182, A116189, A116312.