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A115543 Numbers k such that the concatenation of k with 6*k gives a square. 0
1, 20408163265306122448979591836734694, 81632653061224489795918367346938776, 20408163265306122448979591836734693877551020408163265306122448979591836734694 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
1_6 = 4^2.
CROSSREFS
Sequence in context: A074194 A135386 A095462 * A219323 A272521 A361899
KEYWORD
nonn,base,less
AUTHOR
Giovanni Resta, Jan 25 2006
STATUS
approved

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Last modified April 13 04:33 EDT 2024. Contains 371639 sequences. (Running on oeis4.)