A137130 - OEIS

A137130

Numbers k such that k and k^2 use only the digits 3, 4, 7, 8 and 9.

3, 7, 88, 893, 938, 8933, 8938, 98933, 894393, 939938, 988933, 989333, 993878, 9374833, 9873438, 9973933, 93749333, 94788438, 99744393, 879394393, 888444933, 943344833, 943397978, 987389933, 988933438, 989948933, 999439788, 8794793788, 8797384833, 9379498333, 9433898438, 9478783933, 9949748438, 9993739933, 9994497378, 9998944833

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..136

J. Wellons, Tables of Shared Digits [archived]

EXAMPLE

998738373898978^2 = 997478339498374779973749444484.

CROSSREFS

Sequence in context: A326427 A064118 A041705 * A058379 A111002 A042481

Adjacent sequences: A137127 A137128 A137129 * A137131 A137132 A137133

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved