A116305 Numbers k such that k*(k+8) gives the concatenation of two numbers m and m+2.

3377, 6616, 7027, 49941473, 50058520, 97000297, 785321170880, 799019801017, 989301366860, 997000002997, 4044997109223941, 4136014586911892, 4248535260473901, 4366325506691845, 4457342984379796, 5542657015620197

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			97000297 * 97000305 = 94090583//94090585, where // denotes concatenation.
		

Crossrefs

Cf. A116174, A116299, A116304, A116306, A116312.