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A136819 Numbers n such that n and the square of n use only the digits 0, 1, 2, 4 and 7. 1
0, 1, 2, 10, 11, 12, 20, 21, 100, 101, 102, 110, 120, 200, 201, 210, 421, 1000, 1001, 1002, 1010, 1011, 1012, 1020, 1021, 1071, 1100, 1101, 1102, 1200, 1201, 2000, 2001, 2010, 2011, 2100, 2101, 4210, 10000, 10001, 10002, 10010, 10011, 10012, 10020, 10021, 10100, 10110, 10120, 10200, 10210, 10710, 11000, 11001, 11002, 11010, 11011, 11020, 12000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Generated with DrScheme

LINKS

Jonathan Wellons, Table of n, a(n) for n=1..1154

J. Wellons, Tables of Shared Digits

EXAMPLE

4702140701^2 = 22110127172000771401

CROSSREFS

Sequence in context: A136810 A136821 A105116 * A136816 A188264 A169683

Adjacent sequences:  A136816 A136817 A136818 * A136820 A136821 A136822

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified April 23 22:11 EDT 2014. Contains 240947 sequences.