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Search: id:A136960
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A136960 Numbers n such that n and the square of n use only the digits 0, 4, 7 and 9. +0
1
0, 7, 70, 97, 700, 970, 997, 7000, 9700, 9970, 9997, 70000, 97000, 99700, 99970, 99997, 700000, 970000, 997000, 999700, 999970, 999997, 7000000, 9700000, 9970000, 9997000, 9999700, 9999970, 9999997, 70000000, 97000000, 99700000, 99970000, 99997000, 99999700, 99999970, 99999997, 700000000, 970000000, 997000000, 999700000, 999970000 (list; graph; listen)
OFFSET

1,2

COMMENT

Generated with DrScheme

LINKS

Jonathan Wellons, Table of n, a(n) for n=1..121

J. Wellons, Tables of Shared Digits

EXAMPLE

999999999999997^2 = 999999999999994000000000000009

CROSSREFS

Adjacent sequences: A136957 A136958 A136959 this_sequence A136961 A136962 A136963

Sequence in context: A061476 A136959 A136952 this_sequence A003363 A069542 A063416

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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