A309406 Absolute lucky numbers: every permutation of digits is a lucky number.

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

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