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A116350 Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+9. 4
33, 64, 45211541, 54788456, 78317868, 72388446037855609175404258, 73247326752475247326752673, 75267524732673267524732473, 76126405447292905676080888, 42053270820132695893502981749304 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
78317868 * 78317872 = 61336887//61336896, where // denotes concatenation.
CROSSREFS
Sequence in context: A115160 A053179 A183347 * A331071 A062059 A285317
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified May 26 07:52 EDT 2024. Contains 372807 sequences. (Running on oeis4.)