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A137019 Numbers n such that n and the square of n use only the digits 1, 2, 7 and 9. +0
1
1, 11, 27, 2777 (list; graph; listen)
OFFSET

1,2
COMMENT

Generated with DrScheme

LINKS

J. Wellons, Tables of Shared Digits

EXAMPLE

2777^2 = 7711729

CROSSREFS

Adjacent sequences: A137016 A137017 A137018 this_sequence A137020 A137021 A137022

Sequence in context: A106839 A044072 A044453 this_sequence A122929 A030756 A065006

KEYWORD

base,nonn

AUTHOR

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

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Last modified January 7 17:35 EST 2009. Contains 152824 sequences.

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