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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

Table of n, a(n) for n=1..27.

EXAMPLE

a(6) = 15 because 15 and 51 are lucky numbers.

a(14) = 115 because (115, 151, 511) are all lucky numbers.

CROSSREFS

Cf. A000959, A118561, A031882, A003459.

Sequence in context: A137310 A118567 A118561 * A057701 A140291 A032367

Adjacent sequences:  A309403 A309404 A309405 * A309407 A309408 A309409

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 June 14 20:21 EDT 2021. Contains 345038 sequences. (Running on oeis4.)