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A136957 Numbers k such that k and k^2 use only the digits 0, 4, 6 and 9. 0
0, 64, 640, 6400, 64000, 640000, 6400000, 64000000, 640000000, 6400000000, 64000000000, 640000000000, 6400000000000, 64000000000000, 640000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Generated with DrScheme.
LINKS
EXAMPLE
640000000000000^2 = 409600000000000000000000000000.
CROSSREFS
Sequence in context: A138332 A091083 A136950 * A250233 A297666 A269586
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved

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Last modified March 29 08:01 EDT 2024. Contains 371265 sequences. (Running on oeis4.)