

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
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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



