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A116353 Numbers k such that k*(k+7) gives the concatenation of two numbers m and m+9. 4
27, 67, 3416102887775247376839416334668636, 3756559953325598880263233435801765, 4313503800489302411917772257282209 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
67 * 74 = 49//58, where // denotes concatenation.
CROSSREFS
Sequence in context: A099865 A065008 A250134 * A224525 A219130 A116302
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified May 26 10:56 EDT 2024. Contains 372824 sequences. (Running on oeis4.)