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A116258 Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-5. 4
8444, 8809, 69125298546226023970, 69855225553525294043, 74604750601020544518, 75334677608319814591, 92496418993920707745, 93226346001219977818, 97975871048715228293, 98705798056014498366 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
8809 * 8818 = 7767//7762, where // denotes concatenation.
CROSSREFS
Sequence in context: A208182 A093221 A023321 * A116311 A116351 A253147
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified June 15 10:58 EDT 2024. Contains 373407 sequences. (Running on oeis4.)