

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



LINKS



EXAMPLE

a(6) = 15 because 15 and 51 are lucky numbers.
a(14) = 115 because (115, 151, 511) are all lucky numbers.


CROSSREFS



KEYWORD

base,nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



