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A137063 Numbers k such that k and k^2 use only the digits 1, 5, 7, 8 and 9. 1
1, 9, 9859, 99859, 771891, 987917, 8879859, 75879891, 75891891, 89191859, 98575859, 881575859, 985889891, 999575859, 999787917, 7181581859, 8881991891, 8885875859, 8888171859, 8897857917, 71775871859, 88758771891, 88881717917, 99597789891, 99857857917, 99997857917, 99999575859, 718175178891, 871711871891, 888571871891 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Generated with DrScheme.
LINKS
EXAMPLE
87175179719859^2 = 7599511959189715877718979881.
CROSSREFS
Sequence in context: A249837 A240091 A263438 * A175987 A321618 A055320
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved

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Last modified March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)