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A116286 Numbers n such that n times n+2 gives the concatenation of a number m with itself. 5
9, 99, 427, 572, 726, 845, 999, 7809, 9999, 36364, 63635, 99999, 326733, 673266, 999999, 4545453, 5454546, 9999999, 47058822, 52941177, 99999999, 331983806, 332667333, 384615385, 422892897, 475524476, 524475523, 577107102 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..28.

CROSSREFS

Cf. A116136, A116279, A116285, A116287, A116295.

Sequence in context: A284691 A147829 A116274 * A160946 A100681 A043044

Adjacent sequences:  A116283 A116284 A116285 * A116287 A116288 A116289

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified August 21 13:36 EDT 2017. Contains 290890 sequences.