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A115554 Numbers k such that k^2 is the concatenation of two numbers m and 9*m. 0
14287, 28574, 15384615384615386, 23076923076923079, 30769230769230772, 14285714285714285714285714285714285714285714287, 28571428571428571428571428571428571428571428574 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

14287^2 = 2041_18369.

CROSSREFS

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A232263 A034232 A233889 * A106726 A064965 A072890

Adjacent sequences:  A115551 A115552 A115553 * A115555 A115556 A115557

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Jan 25 2006

STATUS

approved

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Last modified October 18 03:25 EDT 2021. Contains 348065 sequences. (Running on oeis4.)