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A136916 Numbers n such that n and the square of n use only the digits 0, 2, 5, 7 and 8. 1
0, 5, 50, 85, 500, 505, 755, 850, 2255, 5000, 5005, 5050, 5085, 7550, 7555, 8500, 8705, 8805, 22550, 22555, 50000, 50005, 50050, 50085, 50500, 50505, 50555, 50850, 72255, 75500, 75550, 75555, 85000, 85005, 87050, 88050, 225500, 225505, 225550, 225555, 228205, 500000, 500005, 500050, 500085, 500500, 500505, 500755, 500850, 505000, 505050, 505550 (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..1045

J. Wellons, Tables of Shared Digits

EXAMPLE

50502750505^2 = 2550527808570277755025

MATHEMATICA

Module[{c={0, 2, 5, 7, 8}}, Select[FromDigits/@Tuples[c, 6], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, May 05 2020 *)

CROSSREFS

Sequence in context: A136887 A169964 A061474 * A204193 A136919 A136920

Adjacent sequences:  A136913 A136914 A136915 * A136917 A136918 A136919

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified July 5 16:07 EDT 2020. Contains 335473 sequences. (Running on oeis4.)