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A309406 Absolute lucky numbers: every permutation of digits is a lucky number. 2
1, 3, 7, 9, 13, 15, 31, 33, 37, 51, 73, 99, 111, 115, 151, 339, 393, 511, 777, 933, 9999, 33333, 55555, 111111, 777777, 7777777, 55555555 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
More terms are in A031882, as A031882 is a subset of this sequence.
No more terms below 10^9. - Amiram Eldar, Nov 16 2019
LINKS
EXAMPLE
a(6) = 15 because 15 and 51 are lucky numbers.
a(14) = 115 because (115, 151, 511) are all lucky numbers.
CROSSREFS
Sequence in context: A137310 A118567 A118561 * A057701 A140291 A032367
KEYWORD
base,nonn,more
AUTHOR
Hauke Löffler, Jul 29 2019
EXTENSIONS
a(25)-a(27) from Amiram Eldar, Nov 16 2019
STATUS
approved

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Last modified July 22 22:03 EDT 2024. Contains 374544 sequences. (Running on oeis4.)