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A116305 Numbers k such that k*(k+8) gives the concatenation of two numbers m and m+2. 5
3377, 6616, 7027, 49941473, 50058520, 97000297, 785321170880, 799019801017, 989301366860, 997000002997, 4044997109223941, 4136014586911892, 4248535260473901, 4366325506691845, 4457342984379796, 5542657015620197 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
97000297 * 97000305 = 94090583//94090585, where // denotes concatenation.
CROSSREFS
Sequence in context: A044886 A178276 A361348 * A116352 A153746 A243217
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified April 24 06:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)