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A116140 Numbers k such that k concatenated with k-3 gives the product of two numbers which differ by 9. 4
5, 7403, 8885, 12563, 41675, 54239, 2353623, 2650793, 7717533, 527390351115, 567933643889, 627121279653, 671264212463, 1335723019653517755, 2049430589972661489, 2995303155542192885, 4026214090447622723 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
7717533//7717530 = 8784945 * 8784954, where // denotes concatenation.
CROSSREFS
Sequence in context: A202156 A117711 A203689 * A243235 A145530 A067816
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified May 23 16:36 EDT 2024. Contains 372765 sequences. (Running on oeis4.)