

A210417


List the positions of all digits 3 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.


3



2, 3, 30, 6, 31, 9, 32, 13, 33, 12, 14, 21, 34, 25, 35, 29, 333, 3333, 36, 38, 42, 300, 47, 301, 52, 302, 57, 303, 59, 63, 66, 304, 71, 305, 76, 306, 81, 307, 86, 308, 91, 309, 96, 310, 102, 311, 108, 312, 113, 117, 313, 119, 126, 314, 130, 133, 134, 136, 139
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OFFSET

1,1


COMMENTS

See A210415 for comments, links, and code.


LINKS

Danny Rorabaugh, Table of n, a(n) for n = 1..1000


EXAMPLE

The sequence cannot start with 1 because the first digit is not 3. Let us start with 2: second digit equal to 3. So in the second position we have 3 and the third digit must be 3. Because 3 has been already used the minimum number starting with 3 is 30. And so on.


CROSSREFS

Cf. A210414, A210415, A210416, A210418, A210419, A210420, A210421, A210422, A210423.
Sequence in context: A109886 A277811 A127615 * A278048 A273467 A278861
Adjacent sequences: A210414 A210415 A210416 * A210418 A210419 A210420


KEYWORD

nonn,base


AUTHOR

Paolo P. Lava, Mar 26 2012


EXTENSIONS

Name edited and a(30)a(34) corrected by Danny Rorabaugh, Nov 30 2015


STATUS

approved



