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A137046
Numbers k such that k and k^2 use only the digits 1, 4, 5, 6 and 7.
1
1, 4, 74, 76, 746, 6454, 6754, 7466, 64476, 67466, 67576, 74476, 74616, 644574, 664166, 667576, 675771, 717466, 751776, 4176776, 6455746, 6746454, 7151616, 7174616, 7467574, 64154154, 64556654, 66461754, 66751454, 67651616, 67651716, 74474476, 417751666, 664615766, 664647776, 667567716, 674174766, 674667116, 715167576, 717464116
OFFSET
1,2
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
745764545654154^2 = 556164757554746745767777455716.
CROSSREFS
Sequence in context: A222767 A353740 A090212 * A104335 A156494 A232371
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved