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

1,1

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

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

Sequence in context: A044886 A178276 A361348 * A116352 A153746 A243217

Adjacent sequences: A116302 A116303 A116304 * A116306 A116307 A116308

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved