

A141033


Numbers that cannot be formed by the concatenation of previous terms.


2



0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 100, 101, 121, 131, 141, 151, 161, 171, 181, 191, 200, 202, 212, 232, 242, 252, 262, 272, 282, 292, 300, 303, 313, 323, 343, 353, 363, 373, 383, 393, 400, 404
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OFFSET

1,3


COMMENTS

Previous terms can appear in any order but can be used at most once.  Paolo P. Lava, Mar 04 2010


LINKS



EXAMPLE

465 is not in the sequence because 4 U 6 U 5 > 465;
466 is not in the sequence because 4 U 66 > 466;
1313 is not in the sequence because 1 U 313 or 131 U 3 > 1313.


CROSSREFS



KEYWORD

nonn,base


AUTHOR



EXTENSIONS



STATUS

approved



