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A137043 Numbers k such that k and k^2 use only the digits 1, 3, 7, 8 and 9. 1
1, 3, 9, 891, 9891, 13391, 131833, 197917, 993891, 1173833, 1178891, 1331833, 1837917, 1931833, 13318333, 13331833, 19318333, 117787917, 133318333, 193318333, 199971833, 879733891, 1333183333, 1333318333, 1837878891, 1933183333, 1998333891, 3737883333, 8819398391, 8879178891, 9938913391, 9999191833, 13333183333 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..114

J. Wellons, Tables of Shared Digits

EXAMPLE

939783971871833^2 = 883193913787198199337778779889.

CROSSREFS

Sequence in context: A088031 A069028 A318246 * A112726 A112725 A060712

Adjacent sequences: A137040 A137041 A137042 * A137044 A137045 A137046

KEYWORD

base,nonn

AUTHOR

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

STATUS

approved

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Last modified November 29 02:47 EST 2022. Contains 358421 sequences. (Running on oeis4.)