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A136917 Numbers n such that n and the square of n use only the digits 0, 2, 5, 7 and 9. 1
0, 5, 27, 50, 77, 95, 270, 500, 505, 527, 755, 770, 950, 995, 2700, 2755, 5000, 5005, 5027, 5050, 5077, 5095, 5205, 5270, 7227, 7550, 7700, 9500, 9950, 9995, 22577, 27000, 27005, 27550, 50000, 50005, 50027, 50050, 50077, 50095, 50270, 50500, 50505, 50527, 50705, 50770, 50950, 52050, 52700, 72270, 75500, 77000, 77005, 95000, 95005, 97505, 99500 (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..1561

J. Wellons, Tables of Shared Digits

EXAMPLE

52527097505^2 = 2759095972299777225025

MATHEMATICA

With[{c={0, 2, 5, 7, 9}, digs=5}, Select[FromDigits/@Tuples[ c, digs], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Sep 29 2018 *)

CROSSREFS

Sequence in context: A058490 A299578 A308829 * A181890 A048712 A121876

Adjacent sequences:  A136914 A136915 A136916 * A136918 A136919 A136920

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified July 5 17:04 EDT 2020. Contains 335473 sequences. (Running on oeis4.)