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A116195
Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 7.
5
7403, 8885, 12563, 41675, 54239, 2353623, 2650793, 7717533, 527390351115, 567933643889, 627121279653, 671264212463, 1335723019653517755, 2049430589972661489, 2995303155542192885, 4026214090447622723
OFFSET
1,1
EXAMPLE
7717533//7717538 = 8784946 * 8784953, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved